Configuration

Changing default users for services

Change Kibana User

Edit file /etc/systemd/system/kibana.service

	User=newuser
	Group= newuser

Edit /etc/default/kibana

	user=" newuser "
	group=" newuser "

Add appropriate permission:

	chown newuser: /usr/share/kibana/ /etc/kibana/ -R

Change Elasticsearch User

Edit /usr/lib/tmpfiles.d/elasticsearch.conf and change user name and group:

	d /var/run/elasticsearch 0755 newuser newuser – 

Create directory:

	mkdir /etc/systemd/system/elasticsearch.service.d/

Edit /etc/systemd/system/elasticsearch.service.d/01-user.conf

	[Service]
	User=newuser
	Group= newuser

Add appropriate permission:

	chown -R newuser: /var/lib/elasticsearch /usr/share/elasticsearch /etc/elasticsearch /var/log/elasticsearch

Change Logstash User

Create directory:

	mkdir /etc/systemd/system/logstash.service.d

Edit /etc/systemd/system/logstash.service.d/01-user.conf

	[Service]
	User=newuser
	Group=newuser

Add appropriate permission:

	chown -R newuser: /etc/logstash /var/log/logstash

Plugins management

Base installation of the ITRS Log Analytics contains the elasticsearch-auth plugin. You can extend the basic Elasticsearch functionality by installing the custom plugins.

Plugins contain JAR files, but may also contain scripts and config files, and must be installed on every node in the cluster.

After installation, each node must be restarted before the plugin becomes visible.

The Elasticsearch provides two categories of plugins:

• Core Plugins - it is plugins that are part of the Elasticsearch project.
• Community contributed - it is plugins that are external to the Elasticsearch project

Installing Plugins

Core Elasticsearch plugins can be installed as follows:

cd /usr/share/elasticsearch/ 
bin/elasticsearch-plugin install [plugin_name]

Example:

bin/elasticsearch-plugin install ingest-geoip

-> Downloading ingest-geoip from elastic
[=================================================] 100%  
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: plugin requires additional permissions @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
* java.lang.RuntimePermission accessDeclaredMembers
* java.lang.reflect.ReflectPermission suppressAccessChecks
See http://docs.oracle.com/javase/8/docs/technotes/guides/security/permissions.html
for descriptions of what these permissions allow and the associated risks.

Continue with installation? [y/N]y
-> Installed ingest-geoip

Plugins from custom link or filesystem can be installed as follow:

cd /usr/share/elasticsearch/
sudo bin/elasticsearch-plugin install [url]

Example:

sudo bin/elasticsearch-plugin install file:///path/to/plugin.zip
bin\elasticsearch-plugin install file:///C:/path/to/plugin.zip
sudo bin/elasticsearch-plugin install http://some.domain/path/to/plugin.zip

Listing plugins

Listing currently loaded plugins

sudo bin/elasticsearch-plugin list

listing currently available core plugins:

sudo bin/elasticsearch-plugin list --help

Removing plugins

sudo bin/elasticsearch-plugin remove [pluginname]

Updating plugins

sudo bin/elasticsearch-plugin remove [pluginname]
sudo bin/elasticsearch-plugin install [pluginname]

Transport layer encryption

Generating Certificates

1. Requirements for certificate configuration:

   • To encrypt traffic (HTTP and transport layer) of Elasticsearch you have to generate certificate authority which will be used to sign each node certificate of a cluster.
   • Elasticsearch certificate has to be generated in pkcs8 RSA format.

2. Example certificate configuration (Certificates will be valid for 10 years based on this example):

   # To make this process easier prepare some variables:
   DOMAIN=mylocal.domain
   DOMAIN_IP=10.4.3.185 # This is required if certificate validation is used on trasport layer
   COUNTRYNAME=PL
   STATE=Poland
   COMPANY=LOGTEST
   
   # Generate CA key:
   openssl genrsa -out rootCA.key 4096
   
   # Create and sign root certificate:
   echo -e "${COUNTRYNAME}\n${STATE}\n\n${COMPANY}\n\n\n\n" | openssl req -x509 -new -nodes -key rootCA.key -sha256 -days 3650 -out rootCA.crt
   
   # Crete RSA key for domain:
   openssl genrsa -out ${DOMAIN}.pre 2048
   
   # Convert generated key to pkcs8 RSA key for domain hostname
   # (if you do not want to encrypt the key add "-nocrypt" at the end of the command; otherwise it will be necessary to add this password later in every config file):
   openssl pkcs8 -topk8 -inform pem -in ${DOMAIN}.pre -outform pem -out ${DOMAIN}.key
   
   # Create a Certificate Signing Request (openssl.cnf can be in a different location; this is the default for CentOS 7.7):
   openssl req -new -sha256 -key ${DOMAIN}.key -subj "/C=PL/ST=Poland/O=EMCA/CN=${DOMAIN}" -reqexts SAN -config <(cat /etc/pki/tls/openssl.cnf <(printf "[SAN] \nsubjectAltName=DNS:${DOMAIN},IP:${DOMAIN_IP}")) -out ${DOMAIN}.csr
   
   # Generate Domain Certificate
   openssl x509 -req -in ${DOMAIN}.csr -CA rootCA.crt -CAkey rootCA.key -CAcreateserial -out ${DOMAIN}.crt -sha256 -extfile <(printf "[req]  \ndefault_bits=2048\ndistinguished_name=req_distinguished_name\nreq_extensions=req_ext\n[req_distinguished_name]\ncountryName=${COUNTRYNAME}\nstateOrProvinceName=${STATE}  \norganizationName=${COMPANY}\ncommonName=${DOMAIN}\n[req_ext]\nsubjectAltName=@alt_names\n[alt_names]\nDNS.1=${DOMAIN}\nIP=${DOMAIN_IP}\n") -days 3650 -extensions req_ext
   
   # Verify the validity of the generated certificate
   openssl x509 -in ${DOMAIN}.crt -text -noout
   

3. Right now you should have these files:

   $ ls -1 | sort
   mylocal.domain.test.crt
   mylocal.domain.test.csr
   mylocal.domain.test.key
   mylocal.domain.test.pre
   rootCA.crt
   rootCA.key
   rootCA.srl
   

4. Create a directory to store required files (users: elasticsearch, kibana and logstash have to be able to read these files):

   mkdir /etc/elasticsearch/ssl
   cp {mylocal.domain.test.crt,mylocal.domain.test.key,rootCA.crt} /etc/elasticsearch/ssl
   chown -R elasticsearch:elasticsearch /etc/elasticsearch/ssl
   chmod 755 /etc/elasticsearch/ssl
   chmod 644 /etc/elasticsearch/ssl/*
   

Setting up configuration files

1. Append or uncomment below lines in /etc/elasticsearch/elasticsearch.yml and change paths to proper values (based on past steps):

• Transport layer encryption

  logserverguard.ssl.transport.enabled: true
  logserverguard.ssl.transport.pemcert_filepath: "/etc/elasticsearch/ssl/mylocal.domain.test.crt"
  logserverguard.ssl.transport.pemkey_filepath: "/etc/elasticsearch/ssl/mylocal.domain.test.key"
  logserverguard.ssl.transport.pemkey_password: "password_for_pemkey" # if there is no password leve ""
  logserverguard.ssl.transport.pemtrustedcas_filepath: "/etc/elasticsearch/ssl/rootCA.crt"
  
  logserverguard.ssl.transport.enforce_hostname_verification: true
  logserverguard.ssl.transport.resolve_hostname: true
  
  logserverguard.ssl.transport.enabled_ciphers:
   - "TLS_DHE_RSA_WITH_AES_128_GCM_SHA256"
   - "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256"
  
  logserverguard.ssl.transport.enabled_protocols:
   - "TLSv1.2"
  

• HTTP layer encryption

  logserverguard.ssl.http.enabled: true
  logserverguard.ssl.http.pemcert_filepath: "/etc/elasticsearch/ssl/mylocal.domain.test.crt"
  logserverguard.ssl.http.pemkey_filepath: "/etc/elasticsearch/ssl/mylocal.domain.test.key"
  logserverguard.ssl.http.pemkey_password: "password_for_pemkey" # if there is no password leve ""
  logserverguard.ssl.http.pemtrustedcas_filepath: "/etc/elasticsearch/ssl/rootCA.crt"
  
  logserverguard.ssl.http.clientauth_mode: OPTIONAL
  logserverguard.ssl.http.enabled_ciphers:
   - "TLS_DHE_RSA_WITH_AES_128_GCM_SHA256"
   - "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256"
  
  logserverguard.ssl.http.enabled_protocols:
   - "TLSv1.2"
  

1. Append or uncomment below lines in /etc/kibana/kibana.yml and change paths to proper values:

   elasticsearch.hosts: ["https://127.0.0.1:8000"]
   ---
   # Elasticsearch trafic encryption
   # There is also an option to use "127.0.0.1/localhost" and to not supply path to CA. Verification Mode should be then changed to "none".
   elasticsearch.ssl.verificationMode: full
   elasticsearch.ssl.certificate: "/etc/elasticsearch/ssl/mylocal.domain.test.crt"
   elasticsearch.ssl.key: "/etc/elasticsearch/ssl/mylocal.domain.test.key"
   elasticsearch.ssl.keyPassphrase: "password_for_pemkey" # this line is not required if there is no password
   elasticsearch.ssl.certificateAuthorities: "/etc/elasticsearch/ssl/rootCA.crt"
   

2. Append or uncomment below lines in /opt/alert/config.yaml and change paths to proper values:

   # Connect with TLS to Elasticsearch
   use_ssl: True
   
   # Verify TLS certificates
   verify_certs: True
   
   # Client certificate
   client_cert: /etc/elasticsearch/ssl/mylocal.domain.test.crt
   client_key: /etc/elasticsearch/ssl/mylocal.domain.test.key
   ca_certs: /etc/elasticsearch/ssl/rootCA.crt
   

3. For CSV/HTML export to work properly rootCA.crt generated in first step has to be “installed” on the server. Below example for CentOS 7:

   # Copy rootCA.crt and update CA trust store
   cp /etc/elasticsearch/ssl/rootCA.crt /etc/pki/ca-trust/source/anchors/rootCA.crt
   update-ca-trust
   

4. Intelligence module. Generate pkcs12 keystore/cert:

   DOMAIN=mylocal.domain.test
   keytool -import -file /etc/elasticsearch/ssl/rootCA.crt -alias root -keystore root.jks
   openssl pkcs12 -export -in /etc/elasticsearch/ssl/${DOMAIN}.crt -inkey /etc/elasticsearch/ssl/${DOMAIN}.key -out ${DOMAIN}.p12 -name "${DOMAIN}" -certfile /etc/elasticsearch/ssl/rootCA.crt
   

   # Configure /opt/ai/bin/conf.cfg
   https_keystore=/path/to/pk12/mylocal.domain.test.p12
   https_truststore=/path/to/root.jks
   https_keystore_pass=bla123
   https_truststore_pass=bla123
   

Logstash/Beats

You can eather install CA to allow Logstash and Beats traffic or you can supply required certificates in config:

1. Logstash:

   output {
     elasticsearch {
       hosts => "https://mylocal.domain.test:9200"
       ssl => true
       index => "winlogbeat-%{+YYYY.MM}"
       user => "logstash"
       password => "logstash"
       cacert => "/path/to/cacert/rootCA.crt"
     }
   }
   

2. Beats:

   output.elasticsearch.hosts: ["https://mylocal.domain.test:9200"]
   output.elasticsearch.protocol: "https"
   output.elasticsearch.ssl.enabled: true
   output.elasticsearch.ssl.certificate_authorities: ["/path/to/cacert/rootCA.crt"]
   

Additionally, for any beats program to be able to write to elasticsearch, you will have to make changes to “enabled_ciphers” directive in “/etc/elasticsearch/elasticsearch.yml”. This is done by commenting:

logserverguard.ssl.http.enabled_ciphers:
- "TLS_DHE_RSA_WITH_AES_256_GCM_SHA384"

Otherwise, the beat will not be able to send documents directly and if you want to avoid it you can send a document with Logstash first.

Browser layer encryption

Secure Sockets Layer (SSL) and Transport Layer Security (TLS) provide encryption for data-in-transit. While these terms are often used interchangeably, ITRS Log Analytics GUI supports only TLS, which supersedes the old SSL protocols. Browsers send traffic to ITRS Log Analytics GUI and ITRS Log Analytics GUI sends traffic to Elasticsearch database. These communication channels are configured separately to use TLS. TLS requires X.509 certificates to authenticate the communicating parties and perform encryption of data-in-transit. Each certificate contains a public key and has an associated — but separate — private key; these keys are used for cryptographic operations. ITRS Log Analytics GUI supports certificates and private keys in PEM format and support TLS 1.3 version.

Configuration steps

1. Obtain a server certificate and private key for ITRS Log Analytics GUI.

   Kibana will need to use this “server certificate” and corresponding private key when receiving connections from web browsers.

   When you obtain a server certificate, you must set its subject alternative name (SAN) correctly to ensure that modern web browsers with hostname verification will trust it. You can set one or more SANs to the ITRS Log Analytics GUI server’s fully-qualified domain name (FQDN), hostname, or IP address. When choosing the SAN, you should pick whichever attribute you will be using to connect to Kibana in your browser, which is likely the FQDN in a production environment.

2. Configure ITRS Log Analytics GUI to access the server certificate and private key.

   vi /etc/kibana/kibana.yml

   server.ssl.enabled: true
   server.ssl.supportedProtocols: ["TLSv1.3"]
   server.ssl.certificate: "/path/to/kibana-server.crt"
   server.ssl.key: "/path/to/kibana-server.key"
   

3. Set HTTPS in configuration file for the License server:

vi /opt/license-service/license-service.conf

elasticsearch_connection:
  hosts: ["els_host_IP:9200"]

  username: license
  password: "license_user_password"

  https: true

Building a cluster

Node roles

Every instance of Elasticsearch server is called a node. A collection of connected nodes is called a cluster. All nodes know about all the other nodes in the cluster and can forward client requests to the appropriate node.

Besides that, each node serves one or more purpose:

• Master-eligible node - A node that has node.master set to true (default), which makes it eligible to be elected as the master node, which controls the cluster
• Data node - A node that has node.data set to true (default). Data nodes hold data and perform data related operations such as CRUD, search, and aggregations
• Client node - A client node has both node.master and node.data set to false. It can neither hold data nor become the master node. It behaves as a “smart router” and is used to forward cluster-level requests to the master node and data-related requests (such as search) to the appropriate data nodes
• Tribe node - A tribe node, configured via the tribe.* settings, is a special type of client node that can connect to multiple clusters and perform search and other operations across all connected clusters.

Naming convention

Elasticsearch require little configuration before before going into work.

The following settings must be considered before going to production:

• path.data and path.logs - default locations of these files are: /var/lib/elasticsearchand /var/log/elasticsearch.
• cluster.name - A node can only join a cluster when it shares its cluster.name with all the other nodes in the cluster. The default name is “elasticsearch”, but you should change it to an appropriate name which describes the purpose of the cluster. You can do this in /etc/elasticsearch/elasticsearch.yml file.
• node.name - By default, Elasticsearch will use the first seven characters of the randomly generated UUID as the node id. Node id is persisted and does not change when a node restarts. It is worth configuring a more human readable name: node.name: prod-data-2 in file /etc/elstaicsearch/elasticsearch.yml
• network.host - parametr specifying network interfaces to which Elasticsearch can bind. Default is network.host: ["_local_","_site_"].
• discovery - Elasticsearch uses a custom discovery implementation called “Zen Discovery”. There are two important settings:
  • discovery.zen.ping.unicast.hosts - specify list of other nodes in the cluster that are likely to be live and contactable;
  • discovery.zen.minimum_master_nodes - to prevent data loss, you can configure this setting so that each master-eligible node knows the minimum number of master-eligible nodes that must be visible in order to form a cluster.
• heap size - By default, Elasticsearch tells the JVM to use a heap with a minimum (Xms) and maximum (Xmx) size of 1 GB. When moving to production, it is important to configure heap size to ensure that Elasticsearch has enough heap available

Config files

To configure the Elasticsearch cluster you must specify some parameters in the following configuration files on every node that will be connected to the cluster:

• /etc/elsticsearch/elasticserach.yml:
  • cluster.name:name_of_the_cluster - same for every node;
  • node.name:name_of_the_node - uniq for every node;
  • node.master:true_or_false
  • node.data:true_or_false
  • network.host:["_local_","_site_"]
  • discovery.zen.ping.multicast.enabled
  • discovery.zen.ping.unicast.hosts
• /etc/elsticsearch/log4j2.properties:
  • logger: action: DEBUG - for easier debugging.

Example setup

Example of the Elasticsearch cluster configuration:

• file /etc/elasticsearch/elasticsearch.yml:

    cluster.name: tm-lab
    node.name: "elk01"
    node.master: true
    node.data: true
    network.host: 127.0.0.1,10.0.0.4
    http.port: 9200
    discovery.zen.ping.multicast.enabled: false
    discovery.zen.ping.unicast.hosts: ["10.0.0.4:9300","10.0.0.5:9300","10.0.0.6:9300"]
  

• to start the Elasticsearch cluster execute command:

    # systemctl restart elasticsearch
  

• to check status of the Elstaicsearch cluster execute command:

  • check of the Elasticsearch cluster nodes status via tcp port:

      # curl -XGET '127.0.0.1:9200/_cat/nodes?v'
    
      host         	  ip           heap.percent ram.percent load node.role master name
      10.0.0.4 	 10.0.0.4     18           91 		   0.00 -         -      elk01
      10.0.0.5 	 10.0.0.5     66           91 		   0.00 d        *      elk02
      10.0.0.6 	 10.0.0.6     43           86         	   0.65 d        m     elk03
      10.0.0.7 	 10.0.0.7     45           77         	   0.26 d        m     elk04
    

  • check status of the Elasticsearch cluster via log file:

      # tail -f /var/log/elasticsearch/tm-lab.log (cluster.name)
    

Adding a new node to existing cluster

Install the new ITRS Log Analytics instance. The description of the installation can be found in the chapter “First configuration steps”

Change the following parameters in the configuration file:

• cluster.name:name_of_the_cluster same for every node;
• node.name:name_of_the_node uniq for every node;
• node.master:true_or_false
• node.data:true_or_false
• discovery.zen.ping.unicast.hosts:[”10.0.0.4:9300”,”10.0.0.5:9300”,”10.0.0.6:9300”] - IP addresses and instances of nodes in the cluster.

If you add a node with the role data, delete the contents of the path.data directory, by default in /var/lib/elasticsearch

Restart the Elasticsearch instance of the new node:

systemctl restart elasticsearch

Authentication with Active Directory

The AD configuration should be done in the /etc/elasticsearch/properties.yml file.

Below is a list of settings to be made in the properties.yml file (the commented section in the file in order for the AD settings to start working, this fragment should be uncommented):

|**Direcitve**                          		| **Description**               							|
| ------------------------------------------------------|---------------------------------------------------------------------------------------|
| # LDAP                                		|                              								|
| #ldaps:                               		|                               							|
| # - name: \"example.com\"             		|# domain that is configured    							|
| # host: \"127.0.0.1,127.0.0.2\"       		|# list of server for this domain							|
| # port: 389                           		|# optional, default 389 for unencrypted session or 636 for encrypted sessions		|
|# ssl\_enabled: false                  		|# optional, default true       							|
|# ssl\_trust\_all\_certs: true         		|# optional, default false      							|
|# ssl.keystore.file: \"path\"          		|# path to the truststore store 							|
|# ssl.keystore.password: \"path\"      		|# password to the trusted certificate store  						|
|# bind\_dn: [[admin\@example.com]      		|# account name administrator   							|
|# bind\_password: \"password\"         		|# password for the administrator account 						|
|# search\_user\_base\_DN: \"OU=lab,DC=example,DC=com\" |# search for the DN user tree database 						|
|# user\_id\_attribute: \"uid           		|# search for a user attribute optional, by default \"uid\"            			|
|# search\_groups\_base\_DN:\"OU=lab,DC=example,DC=com\"|# group database search. This is a catalog main, after which the groups will be sought.|
|# unique\_member\_attribute: \"uniqueMember\" 		|# optional, default\"uniqueMember\"							|
|# connection\_pool\_size: 10                  		|# optional, default 30									|
|# connection\_timeout\_in\_sec: 10                  	|# optional, default 1									|
|# request\_timeout\_in\_sec: 10                     	|# optional, default 1									|
|# cache\_ttl\_in\_sec: 60                           	|# optional, default 0 - cache disabled							|

If we want to configure multiple domains, then in this configuration file we copy the # LDAP section below and configure it for the next domain.

Below is an example of how an entry for 2 domains should look like. (It is important to take the interpreter to read these values ​​correctly).

ldaps:
        - name: "example1.com"
          host: "127.0.0.1,127.0.0.2"
          port: 389 # optional, default 389
          ssl_enabled: false # optional, default true
          ssl_trust_all_certs: true # optional, default false
          bind_dn: "admin@example1.com"
          bind_password: "password" # generate encrypted password with /usr/share/elasticsearch/pass-encrypter/pass-encrypter.sh
          search_user_base_DN: "OU=lab,DC=example1,DC=com"
          user_id_attribute: "uid" # optional, default "uid"
          search_groups_base_DN: "OU=lab,DC=example1,DC=com"
          unique_member_attribute: "uniqueMember" # optional, default "uniqueMember"
          connection_pool_size: 10 # optional, default 30
          connection_timeout_in_sec: 10 # optional, default 1
          request_timeout_in_sec: 10 # optional, default 1
          cache_ttl_in_sec: 60 # optional, default 0 - cache disabled
          service_principal_name: "esauth@example1.com" # optional, for sso
          service_principal_name_password : "password" # optional, for sso
        - name: "example2.com" #DOMAIN 2
          host: "127.0.0.1,127.0.0.2"
          port: 389 # optional, default 389
          ssl_enabled: false # optional, default true
          ssl_trust_all_certs: true # optional, default false
          bind_dn: "admin@example2.com"
          bind_password: "password" # generate encrypted password with /usr/share/elasticsearch/pass-encrypter/pass-encrypter.sh
          search_user_base_DN: "OU=lab,DC=example2,DC=com"
          user_id_attribute: "uid" # optional, default "uid"
          search_groups_base_DN: "OU=lab,DC=example2,DC=com"
          unique_member_attribute: "uniqueMember" # optional, default "uniqueMember"
          connection_pool_size: 10 # optional, default 30
          connection_timeout_in_sec: 10 # optional, default 1
          request_timeout_in_sec: 10 # optional, default 1
          cache_ttl_in_sec: 60 # optional, default 0 - cache disabled
          service_principal_name: "esauth@example2.com" # optional, for sso
          service_principal_name_password : "password" # optional, for ssl

After completing the LDAP section entry in the properties.yml file, save the changes and restart the service with the command:

# systemctl restart elasticsearch

Configure SSL suport for AD authentication

Open the certificate manager on the AD server.

Select the certificate and open it

Select the option of copying to a file in the Details tab

Click the Next button

Keep the setting as shown below and click Next

Keep the setting as shown below and click Next.

Give the name a certificate

After the certificate is exported, this certificate should be imported into a trusted certificate file that will be used by the Elasticsearch plugin.

To import a certificate into a trusted certificate file, a tool called „keytool.exe” is located in the JDK installation directory.

Use the following command to import a certificate file:

keytool -import -alias adding_certificate_keystore -file certificate.cer -keystore certificatestore

The values for RED should be changed accordingly.

By doing this, he will ask you to set a password for the trusted certificate store. Remember this password, because it must be set in the configuration of the Elasticsearch plugin. The following settings must be set in the properties.yml configuration for SSL:

ssl.keystore.file: "<path to the trust certificate store>"
ssl.keystore.password: "< password to the trust certificate store>"

Role mapping

In the /etc/elasticsearch/properties.yml configuration file you can find a section for configuring role mapping:

# LDAP ROLE MAPPING FILE`
# rolemapping.file.path: /etc/elasticsearch/role-mappings.yml

This variable points to the file /etc/elasticsearch/role-mappings.yml Below is the sample content for this file:

admin:	
"CN=Admins,OU=lab,DC=dev,DC=it,DC=example,DC=com"
bank:
"CN=security,OU=lab,DC=dev,DC=it,DC=example,DC=com"

Attention. The role you define in the role.mapping file must be created in the ITRS Log Analytics.

How to the mapping mechanism works ? An AD user log in to ITRS Log Analytics. In the application there is a admin role, which through the file role-mapping .yml binds to the name of the admin role to which the Admins container from AD is assigned. It is enough for the user from the AD account to log in to the application with the privileges that are assigned to admin role in the ITRS Log Analytics. At the same time, if it is the first login in the ITRS Log Analytics, an account is created with an entry that informs the application administrator that is was created by logging in with AD.

Similar, the mechanism will work if we have a role with an arbitrary name created in ITRS Log Analytics Logistics and connected to the name of the role-mappings.yml and existing in AD any container.

Below a screenshot of the console on which are marked accounts that were created by uesrs logging in from AD

If you map roles with from several domains, for example dev.examloe1.com, dev.example2.com then in User List we will see which user from which domain with which role logged in ITRS Log Analytics.

Password encryption

For security reason you can provide the encrypted password for Active Directory integration. To do this use pass-encrypter.sh script that is located in the Utils directory in installation folder.

1. Installation of pass-encrypter

   cp -pr /instalation_folder/elasticsearch/pass-en00

   000crypter /usr/share/elasticsearch/

2. Use pass-encrypter

    # /usr/share/elasticsearch/utils/pass-encrypter/pass-encrypter.sh
    Enter the string for encryption :
    new_password
    Encrypted string : MTU1MTEwMDcxMzQzMg==1GEG8KUOgyJko0PuT2C4uw==
   

Authentication with Radius

To use the Radius protocol, install the latest available version of ITRS Log Analytics.

Configuration

The default configuration file is located at /etc/elasticsearch/properties.yml:

	# Radius opts
	#radius.host: "10.4.3.184"
	#radius.secret: "querty1q2ww2q1"
	#radius.port: 1812

Use appropriate secret based on config file in Radius server. The secret is configured on clients.conf in Radius server.

In this case, since the plugin will try to do Radius auth then client IP address should be the IP address where the Elasticsearch is deployed.

Every user by default at present get the admin role

Authentication with LDAP

To use OpenLDAP authorization, install or update ITRS Log Analytics 7.0.2.

Configuration

The default configuration file is located at /etc/elasticsearch/properties.yml:

• ldap_groups_search - Enable Open LDAP authorization. The ldap_groups_search switch with true / false values.

• search filter - you can define search_filter for each domain. When polling the LDAP / AD server, the placeholder is changed to userId (everything before @domain) of the user who is trying to login. Sample search_filter:

  search_filter: "(&(objectClass=inetOrgPerson)(cn=%s))"
  

  If no search_filter is given, the default will be used:

  (&(&(objectCategory=Person)(objectClass=User))(samaccountname=%s))
  

• max_connections - for each domain (must be> = 1), this is the maximum number of connections that will be created with the LDAP / AD server for a given domain. Initially, one connection is created, if necessary another, up to the maximum number of connections set. If max_connections is not given, the default value = 10 will be used.

• ldap_groups_search - filter will be used to search groups on the AD / LDAP server of which the user is trying to login. An example of groups_search_filter that works quite universally is:

  groups_search_filter: "(|(uniqueMember=%s)(member=%s))"
  

  Sample configuration:

  licenseFilePath: /usr/share/elasticsearch/
  
  ldaps:
  
      - name: "dev.it.example.com"
        host: "192.168.0.1"
        port: 389                                                  # optional, default 389
        #ssl_enabled: false                                        # optional, default true
        #ssl_trust_all_certs: true                                 # optional, default false
        bind_dn: "Administrator@dev2.it.example.com"                     
        bind_password: "Buspa#mexaj1"                                 
        search_user_base_DN: "OU=lab,DC=dev,DC=it,DC=example,DC=pl"
        search_filter: "(&(objectClass=inetOrgperson)(cn=%s))"     # optional, default "(&(&(objectCategory=Person)(objectClass=User))(samaccountname=%s))"
        user_id_attribute: "uid"                                   # optional, default "uid"
        search_groups_base_DN: "OU=lab,DC=dev,DC=it,DC=example,DC=pl" # base DN, which will be used for searching user's groups in LDAP tree
        groups_search_filter: "(member=%s)"                        # optional, default (member=%s), if ldap_groups_search is set to true, this filter will be used for searching user's membership of LDAP groups
        ldap_groups_search: false                                  # optional, default false - user groups will be determined basing on user's memberOf attribute
        unique_member_attribute: "uniqueMember"                    # optional, default "uniqueMember"
        max_connections: 10                                        # optional, default 10
        connection_timeout_in_sec: 10                              # optional, default 1
        request_timeout_in_sec: 10                                 # optional, default 1
        cache_ttl_in_sec: 60                                       # optional, default 0 - cache disabled
  

  When the password is longer than 20 characters, we recommend using our pass-encrypter, otherwise backslash must be escaped with another backslash. Endpoint role-mapping/_reload has been changed to _role-mapping/reload. This is a unification of API conventions, in accordance with Elasticsearch conventions.

Configuring Single Sign On (SSO)

In order to configure SSO, the system should be accessible by domain name URL, not IP address nor localhost.

Ok :https://loggui.com:5601/login. Wrong : https://localhost:5601/login, https://10.0.10.120:5601/login

In order to enable SSO on your system follow below steps. The configuration is made for AD: dev.example.com, GUI URL: loggui.com

Configuration steps

1. Create an User Account for Elasticsearch auth plugin

   In this step, a Kerberos Principal representing Elasticsearch auth plugin is created on the Active Directory. The principal name would be name@DEV.EXAMPLE.COM, while the DEV.EXAMPLE.COM is the administrative name of the realm. In our case, the principal name will be esauth@DEV.EXAMPLE.COM.

   Create User in AD. Set “Password never expires” and “Other encryption options” as shown below:

   

2. Define Service Principal Name (SPN) and Create a Keytab file for it

   Use the following command to create the keytab file and SPN:

   C:> ktpass -out c:\Users\Administrator\esauth.keytab -princ HTTP/loggui.com@DEV.EXAMPLE.COM -mapUser esauth -mapOp set -pass 'Sprint$123' -crypto ALL -pType KRB5_NT_PRINCIPAL
   

   Values highlighted in bold should be adjusted for your system. The esauth.keytab file should be placed on your elasticsearch node - preferably /etc/elasticsearch/ with read permissions for elasticsearch user: chmod 640 /etc/elasticsearch/esauth.keytab chown elasticsearch: /etc/elasticsearch/esauth.keytab

3. Create a file named krb5Login.conf:

   com.sun.security.jgss.initiate{
       com.sun.security.auth.module.Krb5LoginModule required
       principal="esauth@DEV.EXAMPLE.COM" useKeyTab=true
       keyTab=/etc/elasticsearch/esauth.keytab storeKey=true debug=true;
       };
   com.sun.security.jgss.krb5.accept {
       com.sun.security.auth.module.Krb5LoginModule required
       principal="esauth@DEV.EXAMPLE.COM" useKeyTab=true
       keyTab=/etc/elasticsearch/esauth.keytab storeKey=true debug=true;
       };
   

   Principal user and keyTab location should be changed as per the values created in the step 2. Make sure the domain is in UPPERCASE as shown above. The krb5Login.conf file should be placed on your elasticsearch node, for instance /etc/elasticsearch/ with read permissions for elasticsearch user:

   Ssudo chmod 640 /etc/elasticsearch/krb5Login.conf
   sudo chown elasticsearch: /etc/elasticsearch/krb5Login.conf
   

4. Append the following JVM arguments (on Elasticsearch node in /etc/sysconfig/elasticsearch)

   > -Dsun.security.krb5.debug=true -Djava.security.krb5.realm=**DEV.EXAMPLE.COM** -Djava.security.krb5.kdc=**AD_HOST_IP_ADDRESS** -Djava.security.auth.login.config=**/etc/elasticsearch/krb5Login.conf** -Djavax.security.auth.useSubjectCredsOnly=false
   

   Change the appropriate values in the bold. This JVM arguments has to be set for Elasticsearch server.

5. Add the following additional (sso.domain, service_principal_name, service_principal_name_password) settings for ldap in elasticsearch.yml or properties.yml file wherever the ldap settings are configured:

   sso.domain: "dev.example.com"
   ldaps:
   - name: "dev.example.com"
       host: "IP_address"
       port: 389                                                 # optional, default 389
       ssl_enabled: false                                        # optional, default    true
       ssl_trust_all_certs: false                                 # optional, default false
       bind_dn: "Administrator@dev.example.com"                     # optional, skip for anonymous bind
       bind_password: "administrator_password"                                 # optional, skip for anonymous bind
       search_user_base_DN: "OU=lab,DC=dev,DC=it,DC=example,DC=com"
       user_id_attribute: "uid"                                  # optional, default "uid"
       search_groups_base_DN: "OU=lab,DC=dev,DC=it,DC=example,DC=com"
       unique_member_attribute: "uniqueMember"                   # optional, default "uniqueMember"
       service_principal_name: "esauth@DEV.EXAMPLE.COM"
       service_principal_name_password : "Sprint$123"
   

   Note: At this moment, SSO works for only single domain. So you have to mention for what domain SSO should work in the above property sso.domain

6. To apply the changes restart Elasticsearch service

   sudo systemctl restart elasticsearch.service
   

7. Enable SSO feature in kibana.yml file:

   kibana.sso_enabled: true
   

8. After that Kibana has to be restarted:

   sudo systemctl restart kibana.service
   

Client (Browser) Configuration##

Internet Explorer configuration

1. Goto Internet Options from Tools menu and click on Security Tab:

1. Select Local intranet, click on Site -> Advanced -> Add the url:

After adding the site click close.

1. Click on custom level and select the option as shown below:

Chrome configuration

For Chrome, the settings are taken from IE browser.

Firefox configuration

Update the following config:

Default home page

To set the default application for the GUI home page, please do the following:

• edit /etc/kibana/kibana.yml configuration file:

  vi /etc/kibana/kibana.yml
  

• change the following directives:

  # Home Page settings
  #kibana.defaultAppId: "home"
  

  example:

  # Home Page settings
  kibana.defaultAppId: "alerts"
  

Configure email delivery

Configure email delivery for sending PDF reports in Scheduler.

The default e-mail client that installs with the Linux CentOS system, which is used by ITRS Log Analytics to send reports (Section 5.3 of the Reports chapter), is postfix.# Configuration file for postfix mail client #

The postfix configuration directory for CentOS is /etc/postfix. It contains files:

main.cf - the main configuration file for the program specifying the basics parameters

Some of its directives:

 |**Directive**            |       **Description**                                                                                    |
 | ------------------------| ---------------------------------------------------------------------------------------------------------|
 |queue\_directory         |       The postfix queue location.                                                                         
 |command\_directory       |      The location of Postfix commands.
 |daemon\_directory        |       Location of Postfix daemons.
 |mail\_owner              |       The owner of Postfix domain name of the server
 |myhostname               |       The fully qualified domain name of the server.
 |mydomain                 |       Server domain
 |myorigin                 |       Host or domain to be displayed as origin on email leaving the server.
 |inet\_interfaces         |       Network interface to be used for incoming email.
 |mydestination            |       Domains from which the server accepts mail.
 |mynetworks               |       The IP address of trusted networks.
 |relayhost                |       Host or other mail server through which mail will be sent. This server will act as an outbound gateway.
 |alias\_maps              |       Database of asliases used by the local delivery agent.
 |alias\_database          |       Alias database generated by the new aliases command.
 |mail\_spool\_directory   |       The location where user boxes will be stored.

master.cf - defines the configuration settings for the master daemon and the way it should work with other agents to deliver mail. For each service installed in the master.cf file there are seven columns that define how the service should be used.

 |Column           |     Description
 |---------------- | --------------------------------------------------------------------------------------------
 |service          |    The name of the service
 |type             |    The transport mechanism to be user.
 |private          |    Is the service only for user by Postfix.
 |unpriv           |    Can the service be run by ordinary users
 |chroot           |    Whether the service is to change the main directory (chroot) for the mail. Queue.
 |wakeup           |    Wake up interval for the service.
 |maxproc          |    The maximum number of processes on which the service can be forked (to divide in branches)
 |command + args   |   A command associated with the service plus any argument

access - can be used to control access based on e-mail address, host address, domain or network address.

Examples of entries in the file

 |Description                                     | Example
 |------------------------------------------------|--------------------
 |To allow access for specific IP address:        | 192.168.122.20 OK
 |To allow access for a specific domain:          | example.com OK
 |To deny access from the 192.168.3.0/24 network: | 192.168.3 REJECT

After making changes to the access file, you must convert its contents to the access.db database with the postmap command:

 	# postmap /etc/postfix/access
 	# ll /etc/postfix/access*
 
 	-rw-r\--r\--. 1 root root 20876 Jan 26 2014 /etc/postfix/access
 	-rw-r\--r\--. 1 root root 12288 Feb 12 07:47 /etc/postfix/access.db

canonical - mapping incoming e-mails to local users.

Examples of entries in the file:

To forward emails to user1 to the [[user1@yahoo.com] mailbox:

	user1 user1\@yahoo.com

To forward all emails for example.org to another example.com domain:

	@example.org @example.com

After making changes to the canonical file, you must convert its contents to the canonical.db database with the postmap command:

# postmap /etc/postfix/canonical
# ll /etc/postfix/canonical*

-rw-r\--r\--. 1 root root 11681 2014-06-10 /etc/postfix/canonical
-rw-r\--r\--. 1 root root 12288 07-31 20:56 /etc/postfix/canonical.db

generic - mapping of outgoing e-mails to local users. The syntax is the same as a canonical file. After you make change to this file, you must also run the postmap command.

# postmap /etc/postfix/generic
# ll /etc/postfix/generic*

-rw-r\--r\--. 1 root root 9904 2014-06-10 /etc/postfix/generic
-rw-r\--r\--. 1 root root 12288 07-31 21:15 /etc/postfix/generic.db

reloceted – information about users who have been transferred. The syntax of the file is the same as canonical and generic files.

Assuming tha user1 was moved from example.com to example.net, you can forward all emails received on the old address to the new address:

Example of an entry in the file:

user1@example.com user1@example.net

After you make change to this file, you must also run the postmap command.

# postmap /etc/postfix/relocated
# ll /etc/postfix/relocated*

-rw-r\--r\--. 1 root root 6816 2014-06-10 /etc/postfix/relocated
-rw-r\--r\--. 1 root root 12288 07-31 21:26 /etc/postfix/relocated.d

transport – mapping between e-mail addresses and server through which these e-mails are to be sent (next hops) int the transport format: nexthop.

Example of an entry in the file:

user1@example.com smtp:host1.example.com

After you make changes to this file, you must also run the postmap command.

# postmap /etc/postfix/transport
[root@server1 postfix]# ll /etc/postfix/transport*

-rw-r\--r\--. 1 root root 12549 2014-06-10 /etc/postfix/transport
-rw-r\--r\--. 1 root root 12288 07-31 21:32 /etc/postfix/transport.db

virtual - user to redirect e-mails intended for a certain user to the account of another user or multiple users. It can also be used to implement the domain alias mechanism.

Examples of the entry in the file:

Redirecting email for user1, to root users and user3:

user1 root, user3

Redirecting email for user 1 in the example.com domain to the root user:

user1@example.com root

After you make change to this file, you must also run the postmap command:

# postmap /etc/postfix/virtual
# ll /etc/postfix/virtual

-rw-r\--r\--. 1 root root 12494 2014-06-10 /etc/postfix/virtual
-rw-r\--r\--. 1 root root 12288 07-31 21:58 /etc/postfix/virtual.db

Basic postfix configuration

Base configuration of postfix application you can make in /etc/postfix/main.cfg configuration file, which must complete with the following entry:

• section # RECEIVING MAIL

    inet_interfaces = all
    inet_protocols = ipv4
  

• section # INTERNET OR INTRANET

    relayhost = [IP mail server]:25 (port number)
  

I the netxt step you must complete the canonical file of postfix

At the end you should restart the postfix:

systemctl restart postfix

Example of postfix configuration with SSL encryption enabled

To configure email delivery with SSL encryption you need to make the following changes in the postfix configuration files:

• /etc/postfix/main.cf - file should contain the following entries in addition to standard (unchecked entries):

    mydestination = $myhostname, localhost.$mydomain, localhost
    myhostname = example.com
    relayhost = [smtp.example.com]:587
    smtp_sasl_auth_enable = yes
    smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
    smtp_sasl_security_options = noanonymous
    smtp_tls_CAfile = /root/certs/cacert.cer
    smtp_use_tls = yes
    smtp_sasl_mechanism_filter = plain, login
    smtp_sasl_tls_security_options = noanonymous
    canonical_maps = hash:/etc/postfix/canonical
    smtp_generic_maps = hash:/etc/postfix/generic
    smtpd_recipient_restrictions = permit_sasl_authenticated
  

• /etc/postfix/sasl/passwd - file should define the data for authorized

   	[smtp.example.com\]:587 [[USER@example.com:PASS]](mailto:USER@example.com:PASS)
  

You need to give appropriate permissions:

	chmod 400 /etc/postfix/sasl_passwd

and map configuration to database:

	postmap /etc/postfix/sasl_passwd

next you need to generate a ca cert file:

	cat /etc/ssl/certs/Example\_Server\_CA.pem | tee -a etc/postfix/cacert.pem

And finally, you need to restart postfix

	/etc/init.d/postfix restart

Custom notification on workstation

The mechanism of personalization of notification at the workstation will be implemented by combining alerting mechanisms, triggering integrated commands and triggering interaction scripts allowing for the transfer of a personalized notification to the workstation. The notifications will use the specific script, which has the ability to inform all logged in users or the selected one about the detection of individual incidents.

Configuration steps

1. Create a new alert rule or edit an existing one according to the instruction: Creating Alerts,

2. In Alert Method field select the Command method,

3. Add the following scritp name to Path to script/command filed:

   notifyworkstation.py

Agents module

Before use ensure that you have all required files

• Script for creating necessary certificates: ./agents/masteragent/certificates/generate_certs.sh;

• Logstash utilites:

    ./integrations/masteragent/conf.d/masteragent {01-input-agents.conf, 050-filter-agents.conf, 100-output-agents.conf}
    ./integrations/masteragent/masteragent.yml.off.
  

• Linux Agent files: ./agents/masteragent/agents/linux/masteragent:

Executable: MasterBeatAgent.jar Configuration File for MasterAgent (server): MasterBeatAgent.conf Configuration File for Agent (client): agent.conf Service file: masteragent.service

Preparations

EVERY COMMAND HAVE TO BE EXECUTED FROM /INSTALL DIRECTORY.

1. Generate the certificates using generate_certs.sh script from ./agents/masteragent/certificates directory.

• Fill DOMAIN, DOMAIN_IP, COUNTRYNAME, STATE, COMPANY directives at the beggining of the script. Note that DOMAIN_IP represents IP of host running logstash.
• Generate certs:

# bash ./agents/masteragent/certificates/generate_certs.sh

• Set KeyStore password of your choice that is utilised to securely store certificates.
• Type ‘yes’ when “Trust this certificate?” monit will be shown.
• Set TrusStore password of your choice that is used to secure CAs. Remember entered passwords - they’ll be used later!

1. Configure firewall to enable communication on used ports (defaults: TCP 8080 -> logstash, TCP 8081 -> agent’s server).

• These ports can be changed, but must reflect “port” and “logstash” directives from agent.conf file to ensure connection with agent.
• Commands for default ports:

# firewall-cmd --permanent --zone public --add-port 8080/tcp
# firewall-cmd --permanent --zone public --add-port 8081/tcp

1. Configure Logstash:

• Copy files:

# cp -rf ./integrations/masteragent/conf.d/* /etc/logstash/conf.d/

• Copy pipeline configuration:

# cp -rf ./integrations/masteragent/*.yml.off /etc/logstash/pipelines.d/masteragent.yml
# cat ./integrations/masteragent/masteragent.yml.off >> /etc/logstash/pipelines.yml`

• Configure SSL connection, by copying previously generated certificates:

# mkdir -p /etc/logstash/conf.d/masteragent/ssl
# /bin/cp -rf ./agents/masteragent/certificates/localhost.* ./agents/masteragent/certificates/rootCA.crt /etc/logstash/conf.d/masteragent/ssl/

• Set permissions:

# chown -R logstash:logstash /etc/logstash/conf.d/masteragent

• Restart service:

# systemctl restart logstash

Installation of MasterAgent - Server Side

• Copy executable and config:

# mkdir -p /opt/agents
# /bin/cp -rf ./agents/masteragent/agents/linux/masteragent/MasterBeatAgent.jar /opt/agents
# /bin/cp -rf ./agents/masteragent/agents/linux/masteragent/MasterBeatAgent.conf /opt/agents/agent.conf

• Copy certificates:

# /bin/cp -rf ./agents/masteragent/certificates/node_name.p12 ./agents/masteragent/certificates/root.jks /opt/agents/

• Set permissions:

# chown -R kibana:kibana /opt/agents

• Update configuration file with KeyStore/TrustStore paths and passwords. Use your preferred editor eg. vim:

# vim /opt/agents/agent.conf

Installation of Agent - Client Side

Linux

FOR WINDOWS AND LINUX: `Client requires at least Java 1.8+.

Linux Agent - software installed on clients running on Linux OS:

1. Install net-tools package to use Agent on Linux RH / Centos:

# yum install net-tools

1. Copy executable and config:

# mkdir -p /opt/masteragent
# /bin/cp -rf ./agents/masteragent/agents/linux/masteragent/agent.conf ./agents/masteragent/agents/linux/masteragent/MasterBeatAgent.jar /opt/masteragent
# /bin/cp -rf ./agents/masteragent/agents/linux/masteragent/masteragent.service /usr/lib/systemd/system/masteragent.service

1. Copy certificates:

# /bin/cp -rf ./certificates/node_name.p12 ./certificates/root.jks /opt/masteragent/

1. Update configuration file with KeyStore/TrustStore paths and passwords. Also update IP and port (by default 8080 is used) of the logstash host that agent will connect to with ‘logstash’ directive. Use your preferred editor eg. vim:

# vim /opt/masteragent/agent.conf

1. Enable masteragent service:

# systemctl daemon-reload
# systemctl enable masteragent
# systemctl start masteragent

1. Finally verify in Kibana ‘Agents’ plugin if newly added agent is present. Check masteragent logs executing:

# journalctl -fu masteragent

Windows

FOR WINDOWS AND LINUX: `Client requires at least Java 1.8+.

1. Ensure that you have all required files (./install/agents/masteragent/agents/windows/masteragent):

• Installer and manifest: agents.exe, agents.xml
• Client: Agents.jar
• Configuration File: agent.conf

1. Configure firewall:

Add an exception to the firewall to listen on TCP port 8081. Add an exception to the firewall to allow outgoing connection to TCP port masteragent:8080 (reasonable only with configured “http_enabled = true”)

1. Create C:\Program Files\MasterAgent directory.
2. Copy the contents of the ./install/agents/masteragent/agents/windows/masteragent directory to the C:\Program Files\MasterAgent.
3. Copy node_name.p12 and root.jks files from the ./install/agents/masteragent/certificates to desired directory.
4. Update “C:\Program Files\MasterAgent\agent.conf” file with KeyStore/TrustStore paths from previous step and passwords. Also update IP and port (by default 8080 is used) of the logstash host that agent will connect to with ‘logstash’ directive.
5. Start PowerShell as an administrator:

To install agent you can use interchangeably the following methods:

• Method 1 - use installer:

# cd "C:\Program Files\MasterAgent"
# .\agents.exe install
# .\agents.exe start

• Method 2 - manually creating service:

# New-Service -name masteragent -displayName masteragent -binaryPathName "C:\Program Files\MasterAgent\agents.exe"

1. Finally verify in Kibana ‘Agents’ plugin if newly added agent is present. To check out logs and errors, look for ‘agents.out.log’ and ‘agents.err.log’ files in C:\Program Files\MasterAgent directory after service start. Also check the service status:

# .\agents.exe status

Beats - configuration templates

1. Go to the Agents that is located in main manu. Then go to Templates and click Add template button.

1. Click Create new file button at the bottom.

1. you will see form to create file that will be on client system. There are inputs such as:

• Destination Path,
• File name,
• Description,
• Upload file,
• Content.

1. Remember that you must provide the exact path to your directory in Destination Path field

1. After that add your file to template by checking it from Available files list and clicking Add and then Create new file.

1. You can now see your template in the Template tab

1. The next step will be to add the template to the agent by checking the agent’s form list and clicking Apply Template.

1. Last step is apply template by checking it from list and clicking Apply button.

You can also select multiple agents. Remember, if your file path is Windows type You can only select Windows agents. You can check the Logs by clicking the icon in the logs column.

Agent module compatibility

The Agents module works with Beats agents in the following versions:

Nr	Agent Name	Beats Version	Link to download
1	Filebeat	OSS 7.17.8	https://www.elastic.co/downloads/past-releases/filebeat-oss-7-17-8
2	Packetbeat	OSS 7.17.8	https://www.elastic.co/downloads/past-releases/packetbeat-oss-7-17-8
3	Winlogbeat	OSS 7.17.8	https://www.elastic.co/downloads/past-releases/winlogbeat-oss-7-17-8
4	Metricbeat	OSS 7.17.8	https://www.elastic.co/downloads/past-releases/metricbeat-oss-7-17-8
5	Heartbeat	OSS 7.17.8	https://www.elastic.co/downloads/past-releases/heartbeat-oss-7-17-8
6	Auditbeat	OSS 7.17.8	https://www.elastic.co/downloads/past-releases/auditbeat-oss-7-17-8
7	Logstash	OSS 7.17.8	https://www.elastic.co/downloads/past-releases/logstash-oss-7-17-8

Windows - Beats agents installation

Winlogbeat

Installation

1. Copy the Winlogbeat installer from the installation directory install/Agents/beats/windows/winlogbeat-oss-7.17.8-windows-x86_64.zip and unpack
2. Copy the installation files to the C:\Program Files\Winlogbeat directory

Configuration

Editing the file: C:\Program Files\Winlogbeat\winlogbeat.yml:

1. In section:

   winlogbeat.event_logs:
     - name: Application
       ignore_older: 72h
     - name: Security
     - name: System
   

   change to:

   winlogbeat.event_logs:
     - name: Application
       ignore_older: 72h
     - name: Security
       ignore_older: 72h
     - name: System
       ignore_older: 72h
   

2. In section:

   setup.template.settings:
     index.number_of_shards: 1
   

   change to:

   #setup.template.settings:
     #index.number_of_shards: 1
   

3. In section:

   setup.kibana:
   

   change to:

   #setup.kibana:
   

4. In section:

   output.elasticsearch:
     # Array of hosts to connect to.
     hosts: ["localhost:9200"]
   

   change to:

   #output.elasticsearch:
     # Array of hosts to connect to.
     #hosts: ["localhost:9200"]
   

5. In section:

   #output.logstash:
     # The Logstash hosts
     #hosts: ["localhost:5044"]
   

   change to:

   output.logstash:
     # The Logstash hosts
     hosts: ["LOGSTASH_IP:5044"]
   

6. In section:

   #tags: ["service-X", "web-tier"]
   

   change to:

   tags: ["winlogbeat"]
   

Run the PowerShell console as Administrator and execute the following commands:

cd 'C:\Program Files\Winlogbeat'
.\install-service-winlogbeat.ps1

Security warning
Run only scripts that you trust. While scripts from the internet can be useful,
this script can potentially harm your computer. If you trust this script, use
the Unblock-File cmdlet to allow the script to run without this warning message.
Do you want to run C:\Program Files\Winlogbeat\install-service-winlogbeat.ps1?
[D] Do not run  [R] Run once  [S] Suspend  [?] Help (default is "D"): R

Output:

Status   Name               DisplayName
------   ----               -----------
Stopped    Winlogbeat      Winlogbeat

Start Winlogbeat service:

sc start Winlogbeat

Test configuration:

cd 'C:\Program Files\Winlogbeat'
winlogbeat.exe test config
winlogbeat.exe test output

Drop event

We can also drop events on the agent side. To do this we need to use the drop_event processor

processors:
  - drop_event:
      when:
        condition

Each condition receives a field to compare. You can specify multiple fields under the same condition by using AND between the fields (for example, field1 AND field2).

For each field, you can specify a simple field name or a nested map, for example dns.question.name.

See Exported fields for a list of all the fields that are exported by Winlogbeat.

The supported conditions are:

• equals
• contains
• regexp
• range
• network
• has_fields
• or
• and
• not

equals. With the equals condition, you can compare if a field has a certain value. The condition accepts only an integer or a string value.

For example, the following condition checks if the response code of the HTTP transaction is 200:

equals:
  http.response.code: 200

contains. The contains condition checks if a value is part of a field. The field can be a string or an array of strings. The condition accepts only a string value.

For example, the following condition checks if an error is part of the transaction status:

contains:
  status: "Specific error"

regexp. The regexp condition checks the field against a regular expression. The condition accepts only strings.

For example, the following condition checks if the process name starts with foo:

regexp:
  system.process.name: "^foo.*"

range. The range condition checks if the field is in a certain range of values. The condition supports lt, lte, gt and gte. The condition accepts only integer or float values.

For example, the following condition checks for failed HTTP transactions by comparing the http.response.code field with 400.

range:
  http.response.code:
    gte: 400

This can also be written as:

range:
  http.response.code.gte: 400

The following condition checks if the CPU usage in percentage has a value between 0.5 and 0.8.

range:
  system.cpu.user.pct.gte: 0.5
  system.cpu.user.pct.lt: 0.8

network. The network condition checks if the field is in a certain IP network range. Both IPv4 and IPv6 addresses are supported. The network range may be specified using CIDR notation, like “192.0.2.0/24” or “2001:db8::/32”, or by using one of these named ranges:

• loopback - Matches loopback addresses in the range of 127.0.0.0/8 or ::1/128.
• unicast - Matches global unicast addresses defined in RFC 1122, RFC 4632, and RFC 4291 with the exception of the IPv4 broadcast address (255.255.255.255). This includes private address ranges.
• multicast - Matches multicast addresses.
• interface_local_multicast - Matches IPv6 interface-local multicast addresses.
• link_local_unicast - Matches link-local unicast addresses.
• link_local_multicast - Matches link-local multicast addresses.
• private - Matches private address ranges defined in RFC 1918 (IPv4) and RFC 4193 (IPv6).
• public - Matches addresses that are not loopback, unspecified, IPv4 broadcast, link local unicast, link local multicast, interface local multicast, or private.
• unspecified - Matches unspecified addresses (either the IPv4 address “0.0.0.0” or the IPv6 address “::”).

The following condition returns true if the source.ip value is within the private address space.

network:
  source.ip: private

This condition returns true if the destination.ip value is within the IPv4 range of 192.168.1.0 - 192.168.1.255.

network:
  destination.ip: '192.168.1.0/24'

And this condition returns true when destination.ip is within any of the given subnets.

network:
  destination.ip: ['192.168.1.0/24', '10.0.0.0/8', loopback]

has_fields. The has_fields condition checks if all the given fields exist in the event. The condition accepts a list of string values denoting the field names.

For example, the following condition checks if the http.response.code field is present in the event.

has_fields: ['http.response.code']

or. The or operator receives a list of conditions.

or:
  - <condition1>
  - <condition2>
  - <condition3>
  ...

For example, to configure the condition http.response.code = 304 OR http.response.code = 404:

or:
  - equals:
      http.response.code: 304
  - equals:
      http.response.code: 404

and. The and operator receives a list of conditions.

and:
  - <condition1>
  - <condition2>
  - <condition3>
  ...

For example, to configure the condition http.response.code = 200 AND status = OK:

or:
  - <condition1>
  - and:
    - <condition2>
    - <condition3>

not. The not operator receives the condition to negate.

not:
  <condition>

For example, to configure the condition NOT status = OK:

not:
  equals:
    status: OK

Internal queue

Winlogbeat uses an internal queue to store events before publishing them. The queue is responsible for buffering and combining events into batches that can be consumed by the outputs. The outputs will use bulk operations to send a batch of events in one transaction.

You can configure the type and behavior of the internal queue by setting options in the queue section of the winlogbeat.yml config file. Only one queue type can be configured.

This sample configuration sets the memory queue to buffer up to 4096 events:

queue.mem:
  events: 4096

Configure the memory queue The memory queue keeps all events in memory.

If no flush interval and no number of events to flush is configured, all events published to this queue will be directly consumed by the outputs. To enforce spooling in the queue, set the flush.min_events and flush.timeout options.

By default flush.min_events is set to 2048 and flush.timeout is set to 1s.

The output’s bulk_max_size setting limits the number of events being processed at once.

The memory queue waits for the output to acknowledge or drop events. If the queue is full, no new events can be inserted into the memory queue. Only after the signal from the output will the queue free up space for more events to be accepted.

This sample configuration forwards events to the output if 512 events are available or the oldest available event has been waiting for 5s in the queue:

queue.mem:
  events: 4096
  flush.min_events: 512
  flush.timeout: 5s

Configuration options

You can specify the following options in the queue.mem section of the winlogbeat.yml config file: events Number of events the queue can store. The default value is 4096 events.

flush.min_events Minimum number of events required for publishing. If this value is set to 0, the output can start publishing events without additional waiting times. Otherwise the output has to wait for more events to become available.

The default value is 2048.

flush.timeout Maximum wait time for flush.min_events to be fulfilled. If set to 0s, events will be immediately available for consumption. The default value is 1s.

Configure disk queue The disk queue stores pending events on the disk rather than main memory. This allows Beats to queue a larger number of events than is possible with the memory queue, and to save events when a Beat or device is restarted. This increased reliability comes with a performance tradeoff, as every incoming event must be written and read from the device’s disk. However, for setups where the disk is not the main bottleneck, the disk queue gives a simple and relatively low-overhead way to add a layer of robustness to incoming event data.

The disk queue is expected to replace the file spool in a future release.

To enable the disk queue with default settings, specify a maximum size:

queue.disk:
  max_size: 10GB

The queue will use up to the specified maximum size on disk. It will only use as much space as required. For example, if the queue is only storing 1GB of events, then it will only occupy 1GB on disk no matter how high the maximum is. Queue data is deleted from disk after it has been successfully sent to the output.

Configuration options

You can specify the following options in the queue.disk section of the winlogbeat.yml config file:

path The path to the directory where the disk queue should store its data files. The directory is created on startup if it doesn’t exist.

The default value is "${path.data}/diskqueue".

max_size (required) The maximum size the queue should use on disk. Events that exceed this maximum will either pause their input or be discarded, depending on the input’s configuration.

A value of 0 means that no maximum size is enforced, and the queue can grow up to the amount of free space on the disk. This value should be used with caution, as completely filling a system’s main disk can make it inoperable. It is best to use this setting only with a dedicated data or backup partition that will not interfere with Winlogbeat or the rest of the host system.

The default value is 10GB.

segment_size Data added to the queue is stored in segment files. Each segment contains some number of events waiting to be sent to the outputs, and is deleted when all its events are sent. By default, segment size is limited to 1/10 of the maximum queue size. Using a smaller size means that the queue will use more data files, but they will be deleted more quickly after use. Using a larger size means some data will take longer to delete, but the queue will use fewer auxiliary files. It is usually fine to leave this value unchanged.

The default value is max_size / 10.

read_ahead The number of events that should be read from disk into memory while waiting for an output to request them. If you find outputs are slowing down because they can’t read as many events at a time, adjusting this setting upward may help, at the cost of higher memory usage.

The default value is 512.

write_ahead The number of events the queue should accept and store in memory while waiting for them to be written to disk. If you find the queue’s memory use is too high because events are waiting too long to be written to disk, adjusting this setting downward may help, at the cost of reduced event throughput. On the other hand, if inputs are waiting or discarding events because they are being produced faster than the disk can handle, adjusting this setting upward may help, at the cost of higher memory usage.

The default value is 2048.

retry_interval Some disk errors may block operation of the queue, for example a permission error writing to the data directory, or a disk full error while writing an event. In this case, the queue reports the error and retries after pausing for the time specified in retry_interval.

The default value is 1s (one second).

max_retry_interval When there are multiple consecutive errors writing to the disk, the queue increases the retry interval by factors of 2 up to a maximum of max_retry_interval. Increase this value if you are concerned about logging too many errors or overloading the host system if the target disk becomes unavailable for an extended time.

The default value is 30s (thirty seconds).

Filebeat

Installation

1. Copy the Filebeat installer from the installation directory install/Agents/beats/windows/filebeat-oss-7.17.8-windows-x86_64.zip and unpack
2. Copy the installation files to the C:\Program Files\Filebeat directory

Configuration

Editing the file: C:\Program Files\Filebeat\filebeat.yml:

1. In section:

   - type: log
   
     # Change to true to enable this input configuration.
     enabled: false
   

   change to:

   - type: log
   
     # Change to true to enable this input configuration.
     enabled: true
   

2. In section:

       paths:
       - /var/log/*.log
       #- c:\programdata\elasticsearch\logs\*
   

   change to:

   paths:
       #- /var/log/*.log
       #- c:\programdata\elasticsearch\logs\*
       - "C:\Program Files\Microsoft SQL Server\*\MSSQL\Log\*"
       - "C:\inetpub\logs\*""
   

3. In section:

   setup.template.settings:
     index.number_of_shards: 1
   

   change to:

   #setup.template.settings:
     #index.number_of_shards: 1
   

4. In section:

   setup.kibana:
   

   change to:

   #setup.kibana:
   

5. In section:

   output.elasticsearch:
     # Array of hosts to connect to.
     hosts: ["localhost:9200"]
   

   change to:

   #output.elasticsearch:
     # Array of hosts to connect to.
     #hosts: ["localhost:9200"]
   

6. In section:

   #output.logstash:
     # The Logstash hosts
     #hosts: ["localhost:5044"]
   

   change to:

   output.logstash:
     # The Logstash hosts
     hosts: ["LOGSTASH_IP:5044"]
   

7. In section:

   #tags: ["service-X", "web-tier"]
   

   change to:

   tags: ["filebeat"]
   

Run the PowerShell console as Administrator and execute the following commands:

cd 'C:\Program Files\Filebeat'
.\install-service-filebeat.ps1

Security warning
Run only scripts that you trust. While scripts from the internet can be useful,
this script can potentially harm your computer. If you trust this script, use
the Unblock-File cmdlet to allow the script to run without this warning message.
Do you want to run C:\Program Files\Filebeat\install-service-filebeat.ps1?
[D] Do not run  [R] Run once  [S] Suspend  [?] Help (default is "D"): R

Output:

Status   Name               DisplayName
------   ----               -----------
Stopped  Filebeat        Filebeat

Start Filebeat service:

sc start filebeat

You can enable, disable and list Filebeat modules using the following command:

cd 'C:\Program Files\Filebeat'
filebeat.exe modules list
filebeat.exe modules apache enable
filebeat.exe modules apache disable

Test configuration:

cd 'C:\Program Files\Filebeat'
filebeat.exe test config
filebeat.exe test output

Merticbeat

Installation

1. Copy the Merticbeat installer from the installation directory install/Agents/beats/windows/merticbeat-oss-7.17.8-windows-x86_64.zip and unpack
2. Copy the installation files to the C:\Program Files\Merticbeat directory

Configuration

Editing the file: C:\Program Files\Merticbeat\metricbeat.yml:

1. In section:

   setup.template.settings:
     index.number_of_shards: 1
     index.codec: best_compression
   

   change to:

   #setup.template.settings:
     #index.number_of_shards: 1
     #index.codec: best_compression
   

2. In section:

   setup.kibana:
   

   change to:

   #setup.kibana:
   

3. In section:

   output.elasticsearch:
     # Array of hosts to connect to.
     hosts: ["localhost:9200"]
   

   change to:

   #output.elasticsearch:
     # Array of hosts to connect to.
     #hosts: ["localhost:9200"]
   

4. In section:

   #output.logstash:
     # The Logstash hosts
     #hosts: ["localhost:5044"]
   

   change to:

   output.logstash:
     # The Logstash hosts
     hosts: ["LOGSTASH_IP:5044"]
   

5. In section:

   #tags: ["service-X", "web-tier"]
   

   change to:

   tags: ["metricbeat"]
   

Run the PowerShell console as Administrator and execute the following commands:

cd 'C:\Program Files\Metricbeat'
.\install-service-metricbeat.ps1

Security warning
Run only scripts that you trust. While scripts from the internet can be useful,
this script can potentially harm your computer. If you trust this script, use
the Unblock-File cmdlet to allow the script to run without this warning message.
Do you want to run C:\Program Files\Metricbeat\install-service-metricbeat.ps1?
[D] Do not run  [R] Run once  [S] Suspend  [?] Help (default is "D"): R

Output:

Status   Name               DisplayName
------   ----               -----------
Stopped  Metricbeat        Metricbeat

Start Filebeat service:

sc start metricbeat

You can enable, disable and list Metricbeat modules using the following command:

cd 'C:\Program Files\Metricbeat'
metricbeat.exe modules list
metricbeat.exe modules apache enable
metricbeat.exe modules apache disable

Test configuration:

cd 'C:\Program Files\Metricbeat'
metricbeat.exe test config
metricbeat.exe test output

Packetbeat

Installation

1. Copy the Packetbeatinstaller from the installation directory install/Agents/beats/windows/packetbeat-oss-7.17.8-windows-x86_64.zip and unpack
2. Copy the installation files to the C:\Program Files\Packetbeat directory

Configuration

Editing the file: C:\Program Files\Packetbeat\packetbeat.yml:

1. In section:

   setup.template.settings:
     index.number_of_shards: 3
   

   change to:

   #setup.template.settings:
     #index.number_of_shards: 3
   

2. In section:

   setup.kibana:
   

   change to:

   #setup.kibana:
   

3. In section:

   output.elasticsearch:
     # Array of hosts to connect to.
     hosts: ["localhost:9200"]
   

   change to:

   #output.elasticsearch:
     # Array of hosts to connect to.
     #hosts: ["localhost:9200"]
   

4. In section:

   #output.logstash:
     # The Logstash hosts
     #hosts: ["localhost:5044"]
   

   change to:

   output.logstash:
     # The Logstash hosts
     hosts: ["LOGSTASH_IP:5044"]
   

5. In section:

   #tags: ["service-X", "web-tier"]
   

   change to:

   tags: ["packetbeat"]
   

Run the PowerShell console as Administrator and execute the following commands:

cd 'C:\Program Files\\Packetbeat'
.\install-service-packetbeat.ps1

Security warning
Run only scripts that you trust. While scripts from the internet can be useful,
this script can potentially harm your computer. If you trust this script, use
the Unblock-File cmdlet to allow the script to run without this warning message.
Do you want to run C:\Program Files\Packetbeat\install-service-packetbeat.ps1?
[D] Do not run  [R] Run once  [S] Suspend  [?] Help (default is "D"): R

Output:

Status   Name               DisplayName
------   ----               -----------
Stopped  Packetbeat        Packetbeat

Start Packetbeat service:

sc start packetbeat

Test configuration:

cd 'C:\Program Files\Packetbeat'
packetbeat.exe test config
packetbeat.exe test output

Linux - Beats agents installation

Filebeat

Installation

1. Copy the Filebeat installer from the installation directory install/Agents/beats/linux/filebeat-oss-7.17.8-x86_64.rpm

2. Install filebeat with following commadn:

   yum install -y filebeat-oss-7.17.8-x86_64.rpm
   

Configuration

Editing the file: /etc/filebeat/filebeat.yml:

1. In section:

   - type: log
   
     # Change to true to enable this input configuration.
     enabled: false
   

   change to:

   - type: log
   
     # Change to true to enable this input configuration.
     enabled: true
   

2. In section:

   setup.template.settings:
     index.number_of_shards: 1
   

   change to:

   #setup.template.settings:
     #index.number_of_shards: 1
   

3. In section:

   setup.kibana:
   

   change to:

   #setup.kibana:
   

4. In section:

   output.elasticsearch:
     # Array of hosts to connect to.
     hosts: ["localhost:9200"]
   

   change to:

   #output.elasticsearch:
     # Array of hosts to connect to.
     #hosts: ["localhost:9200"]
   

5. In section:

   #output.logstash:
     # The Logstash hosts
     #hosts: ["localhost:5044"]
   

   change to:

   output.logstash:
     # The Logstash hosts
     hosts: ["LOGSTASH_IP:5044"]
   

6. In section:

   #tags: ["service-X", "web-tier"]
   

   change to:

   tags: ["filebeat"]
   

Start Filebeat service:

systemctl start filebeat

You can enable, disable and list Filebeat modules using the following command:

filebeat modules list
filebeat modules apache enable
filebeat modules apache disable

Test configuration:

filebeat test config
filebeat test output

Merticbeat

Installation

1. Copy the Merticbeatinstaller from the installation directory install/Agents/beats/linux/metricbeat-oss-7.17.8-x86_64.rpm

2. Install Merticbeat with following command:

   yum install -y metricbeat-oss-7.17.8-x86_64.rpm
   

Configuration

Editing the file: /etc/metricbeat/metricbeat.yml:

1. In section:

   setup.template.settings:
     index.number_of_shards: 1
     index.codec: best_compression
   

   change to:

   #setup.template.settings:
     #index.number_of_shards: 1
     #index.codec: best_compression
   

2. In section:

   setup.kibana:
   

   change to:

   #setup.kibana:
   

3. In section:

   output.elasticsearch:
     # Array of hosts to connect to.
     hosts: ["localhost:9200"]
   

   change to:

   #output.elasticsearch:
     # Array of hosts to connect to.
     #hosts: ["localhost:9200"]
   

4. In section:

   #output.logstash:
     # The Logstash hosts
     #hosts: ["localhost:5044"]
   

   change to:

   output.logstash:
     # The Logstash hosts
     hosts: ["LOGSTASH_IP:5044"]
   

5. In section:

   #tags: ["service-X", "web-tier"]
   

   change to:

   tags: ["metricbeat"]
   

Start Filebeat service:

systemctl start metricbeat

You can enable, disable and list Metricbeat modules using the following command:

metricbeat modules list
metricbeat modules apache enable
metricbeat modules apache disable

Test configuration:

metricbeat test config
metricbeat test output

Packetbeat

Installation

1. Copy the Packetbeat installer from the installation directory install/Agents/beats/linux/packetbeat-oss-7.17.8-x86_64.rpm

2. Install Packetbeatwith following command:

   yum install -y packetbeat-oss-7.17.8-x86_64.rpm
   

Configuration

Editing the file: /etc/packetbeat/packetbeat.yml:

1. In section:

   setup.template.settings:
     index.number_of_shards: 3
   

   change to:

   #setup.template.settings:
     #index.number_of_shards: 3
   

2. In section:

   setup.kibana:
   

   change to:

   #setup.kibana:
   

3. In section:

   output.elasticsearch:
     # Array of hosts to connect to.
     hosts: ["localhost:9200"]
   

   change to:

   #output.elasticsearch:
     # Array of hosts to connect to.
     #hosts: ["localhost:9200"]
   

4. In section:

   #output.logstash:
     # The Logstash hosts
     #hosts: ["localhost:5044"]
   

   change to:

   output.logstash:
     # The Logstash hosts
     hosts: ["LOGSTASH_IP:5044"]
   

5. In section:

   #tags: ["service-X", "web-tier"]
   

   change to:

   tags: ["packetbeat"]
   

Start Packetbeat service:

servicectl start packetbeat

Test configuration:

packetbeat test config
packetbeat test output

Kafka

Kafka allows you to distribute the load between nodes receiving data and encrypts communication.

Architecture example:

The Kafka installation

To install the Kafka, follow the steps below:

1. Java installation

   yum install java-11-openjdk-headless.x86_64
   

2. Create users for Kafka

   useradd kafka -m -d /opt/kafka -s /sbin/nologin
   

3. Download the installation package::

   https://www.apache.org/dyn/closer.cgi?path=/kafka/3.2.0/kafka_2.13-3.2.0.tgz
   

4. Unpack installation files to /opt/kafka directory:

   tar -xzvf kafka_2.13-3.2.0.tgz -C /opt/
   mv /opt/kafka_2.13-3.2.0 /opt/kafka
   

5. Set the necessary permissions

   chown -R kafka:kafka /opt/kafka
   

6. Edit configs and set the data and log directory:

   vim  /opt/kafka/config/server.properties
   

   log.dirs=/tmp/kafka-logs
   

7. Set the necessary firewall rules:

   firewall-cmd --permanent --add-port=2181/tcp
   firewall-cmd --permanent --add-port=2888/tcp
   firewall-cmd --permanent --add-port=3888/tcp
   firewall-cmd --permanent --add-port=9092/tcp
   firewall-cmd --reload
   

8. Create service files:

   vim /usr/lib/systemd/system/zookeeper.service

   [Unit]
   Requires=network.target remote-fs.target
   After=network.target remote-fs.target
   
   [Service]
   Type=simple
   User=kafka
   ExecStart=/opt/kafka/bin/zookeeper-server-start.sh /opt/kafka/config/zookeeper.properties
   ExecStop=/opt/kafka/bin/zookeeper-server-stop.sh
   Restart=on-abnormal
   
   [Install]
   WantedBy=multi-user.target
   

   vim create /usr/lib/systemd/system/kafka.service

   [Unit]
   Requires=zookeeper.service
   After=zookeeper.service
   
   [Service]
   Type=simple
   User=kafka
   ExecStart=/bin/sh -c '/opt/kafka/bin/kafka-server-start.sh /opt/kafka/config/server.properties > /opt/kafka/kafka.log 2>&1'
   ExecStop=/opt/kafka/bin/kafka-server-stop.sh
   Restart=on-abnormal
   
   [Install]
   WantedBy=multi-user.target
   

9. Reload systemctl daemon and the Kafka services:

   systemctl daemon-reload
   systemctl enable zookeeper kafka
   systemctl start zookeeper kafka
   

10. To test add the Kafka topic:

    /opt/kafka/bin/kafka-topics.sh --bootstrap-server localhost:9092 --create --partitions 1 --replication-factor 1 --topic test
    

11. List existing topics:

    /opt/kafka/bin/kafka-topics.sh --bootstrap-server localhost:9092 --list
    

12. Generate test messages

    /opt/kafka/bin/kafka-console-producer.sh --topic test --bootstrap-server localhost:9092
       message 1
       message 2
       ...
    

13. Read test messages

    /opt/kafka/bin/kafka-console-consumer.sh --topic test --from-beginning --bootstrap-server localhost:9092
    

Kafka encryption

1. Generate server keystore with certificate pair.

   Complete:

   • Certificate validity period;
   • The name of the alias;
   • The FQDN of the server;
   • Server IP;

   keytool -keystore server.keystore.jks -alias {alias_name} -validity {validity} -genkey -keyalg RSA -ext SAN=DNS:{FQDN},IP:{server_IP}
   

2. Creating your own CA

   openssl req -new -x509 -keyout rootCA.key -out rootCA.crt -days 365
   

3. Import CA to server keystore and client keystore:

   keytool -keystore server.truststore.jks -alias CARoot -import -file rootCA.crt
   keytool -keystore client.truststore.jks -alias CARoot -import -file rootCA.crt
   

4. Create a certificate signing request:

   Complete:

   • The name of the alias;
   • The FQDN of the server;
   • Server IP;

   keytool -keystore server.keystore.jks -alias {alias_name} -certreq -file cert-file -ext SAN=DNS:{FQDN},IP:{server_IP}
   

5. Sing in certificate

   Complete:

   • The name of the alias;
   • The FQDN of the server;
   • Server IP;
   • Password

   openssl x509 -req -extfile <(printf"subjectAltName = DNS:{FQDN},IP:{server_IP}") -CA rootCA.crt -CAkey rootCA.key -in cert-file -out cert-signed -days 3650 -CAcreateserial -passin pass:{password}
   

6. Import rootCA and cert-signed to server keystore

   keytool -keystore server.keystore.jks -alias CARoot -import -file rootCA.crt
   keytool -keystore server.keystore.jks -alias els710 -import -file cert-signed
   

7. If you have trusted certificates, you must import them into the JKS keystore as follows:

   Create a keystore:

   Complete:

   • Certificate validity period;
   • The name of the alias;
   • The FQDN of the server;
   • Server IP;

   keytool -keystore client.keystore.jks -alias {alias_name} -validity {validity} -keyalg RSA -genkey
   

8. Combine the certificate and key file into a certificate in p12 format:

   Complete:

   • your cert name;
   • your key name;
   • friendly name;
   • CA cert file;

   openssl pkcs12 -export -in {your_cert_name} -inkey {your_key_name} -out {your_pair_name}.p12 -name {friendly_name} -CAfile ca.crt -caname root
   

9. Import the CA certificate into a truststore:

   Complete:

   • CA cert file;

   keytool -keystore client.truststore.jks -alias CARoot -import -file {CAfile}
   

10. Import the CA certificate into a keystore:

    Complete:

    • CA cert file.

    keytool -keystore client.keystore.jks -alias CARoot -import -file {CAfile}
    

11. Import the p12 certificate into a keystore:

    Complete:

    • Your p12 pair;
    • Keystore password;

    keytool -importkeystore -deststorepass {keystore_password} -destkeystore client.keystore.jks -srckeystore {your_pair_name}.p12 -srcstoretype PKCS12
    

Configuring Kafka Brokers

1. In /opt/kafka/server.properties file set the following options:

   Complete:

   • Path to server keystore;
   • Keystore password;
   • Password for certificate key;
   • Path to server truststore;
   • Truststore password.

   listeners=PLAINTEXT://localhost:9092,SSL://{FQDN}:9093
   ssl.keystore.location={path_to_server_keystore}/server.keystore.jks
   ssl.keystore.password={keysotre_passowrd}
   ssl.key.password={key_password}
   ssl.truststore.location={path_to_server_truststore}/server.truststore.jks
   ssl.truststore.password={truststore_passowrd}
   ssl.enabled.protocols=TLSv1.2
   ssl.client.auth=required
   security.inter.broker.protocol=SSL
   

2. Restart the Kafka service

systemctl restart kafka

Configuring Kafka Clients

1. Configure the output section in Logstash based on the following example:

   Complete:

   • Server FQDN;
   • Path to client truststore;
   • Truststore password.

   output {
     kafka {
       bootstrap_servers => "{FQDN}:9093"
       security_protocol => "SSL"
       ssl_truststore_type => "JKS"
       ssl_truststore_location => "{path_to_client_truststore}/client.truststore.jks"
       ssl_truststore_password => "{password_to_client_truststore}"
       client_id => "host.name"
       topic_id => "Topic-1"
       codec => json
     }
   }
   

2. Configure the input section in Logstash based on the following example:

   Complete:

   • Server FQDN;
   • Path to client truststore;
   • Truststore password.

   input {
     kafka {
       bootstrap_servers => "{}:port"
       security_protocol => "SSL"
       ssl_truststore_type => "JKS"
       ssl_truststore_location => "{path_to_client_truststore}/client.truststore.jks"
       ssl_truststore_password => "{password_to_client_truststore}"
       consumer_threads => 4
       topics => [ "Topic-1" ]
       codec => json
       tags => ["kafka"]
      }
   }
   

Log retention for Kafka topic

The Kafka durably persists all published records—whether or not they have been consumed—using a configurable retention period. For example, if the retention policy is set to two days, then for the two days after a record is published, it is available for consumption, after which it will be discarded to free up space. Kafka’s performance is effectively constant with respect to data size so storing data for a long time is not a problem.

Event Collector

The Event Collector allows to get events from remote Windows computers and store them in the ITRS Log Analytics indexes. The destination log path for the events is a property of the subscription. The ITRS Log Analytics Event Collector allows to define an event subscription on an ITRS Log Analytics collector without defining the event source computers. Multiple remote event source computers can then be set up (using for example a group policy setting) to forward events to the ITRS Log Analytics. The Event Collector don’t require installation of any additional applications/agents on Windows source hosts.

Configuration steps

Installation of Event Collector

tar zxf wec_7x-master.tar.gz -C /opt/
mkdir /opt/wec
mv /opt/wec_7x-master/ /opt/wec/
mkdir /etc/wec
cp /opt/wec/sub_manager/config.yaml /etc/wec/config.yaml

Generate certificate

mkdir /opt/wec/certgen
cd /opt/wec/certgen
vim server-certopts.cnf

• Set DNS.1 and IP.1 for WEC server:

  [req]
  default_bits = 4096
  default_md = sha256
  req_extensions = req_ext
  keyUsage = keyEncipherment,dataEncipherment
  basicConstraints = CA:FALSE
  distinguished_name = dn
  
  [ req_ext ]
  subjectAltName = @alt_names
  extendedKeyUsage = serverAuth,clientAuth
  
  [ alt_names ]
  DNS.1 = wec.local.domain
  IP.1 = 192.168.13.163
  
  [dn]
  

• Set DNS.1 and IP.1 for client certificate:

  vim client-certopts.cnf
  

  [req]
  default_bits = 4096
  default_md = sha256
  req_extensions = req_ext
  keyUsage = keyEncipherment,dataEncipherment
  basicConstraints = CA:FALSE
  distinguished_name = dn
  
  [ req_ext ]
  subjectAltName = @alt_names
  extendedKeyUsage = serverAuth,clientAuth
  
  [ alt_names ]
  DNS.1 = *local.domain
  
  [dn]
  

• Generate the CA certificate and private key, next check fingerprint:

  openssl genrsa -out ca.key 4096
  openssl req -x509 -new -nodes -key ca.key -days 3650 -out ca.crt -subj '/CN=wec.local.domain/O=example.com/C=CA/ST=QC/L=Montreal'
  openssl x509 -in ca.crt -fingerprint -sha1 -noout | sed -e 's/\://g' > ca.fingerprint
  

• Generate the client certificate and export it together with the CA in PFX format to be imported into the Windows certificate store:

  openssl req -new -newkey rsa:4096 -nodes -out server.csr -keyout server.key -subj '/CN=wec.local.domain/O=example.com/C=CA/ST=QC/L=Montreal'
  openssl x509 -req -in server.csr -out server.crt -CA ca.crt -CAkey ca.key -CAcreateserial -extfile server-certopts.cnf -extensions req_ext -days 365
  

• Generate the server certificate to be used by the WEC:

  openssl req -new -newkey rsa:4096 -nodes -out client.csr -keyout client.key -subj '/CN=wec.local.domain/O=example.com/C=CA/ST=QC/L=Montreal'
  openssl x509 -req -in client.csr -out client.crt -CA ca.crt -CAkey ca.key -CAcreateserial -extfile client-certopts.cnf -extensions req_ext -days 365
  openssl pkcs12 -export  -inkey client.key -in client.crt -certfile ca.crt -out client.p12
  

Event Collector Configuration

• Copy server certificate and server key to Event Collector installation directory:

  cp server.crt server.key /opt/wec/sub_manager/certificates/
  

• Edit configuration file config.yaml

  vim /etc/wec/config.yaml
  

  • set the following options:

  external_host: wec.local.domain
  #check ca.fingerprint file
  ca_fingerprint: 97DDCD6F3AFA511EED5D3312BC50D194A9C9FA9A
  certificate: /opt/wec/sub_manager/certificates/server.crt
  key: /opt/wec/sub_manager/certificates/server.key
  

  • set the output for Event Collector to Logstash forwarding:

  remote_syslog:
      # forward events to remote syslog server
      address: 192.168.13.170
      port: 5614
  

  • set the output to saving events to local file:

  outputfile: /var/log/wec/events-{:%Y-%d-%m}.log
  

  • disable local syslog output:

  local_syslog: false
  

  • set the filter section:

  filters:
            # source list
  
  		- source: 'Security'
            filter: '*[System[(Level=1 or Level=2 or Level=3 or Level=4 or Level=0 or Level=5) and (EventID=4672 or EventID=4624 or EventID=4634)]]'
  
  	    - source: 'Application'
            filter: '*[System[(Level=1 or Level=2 or Level=3 or Level=4 or Level=0 or Level=5)]]'
  
          - source: 'System'
            filter: '*[System[(Level=1 or Level=2 or Level=3 or Level=4 or Level=0 or Level=5)]]'
  

Install dependencies

1. Python 3.8 installation:

   sudo yum -y update
   sudo yum -y groupinstall "Development Tools"
   sudo yum -y install openssl-devel bzip2-devel libffi-devel
   sudo yum -y install wget
   wget https://www.python.org/ftp/python/3.8.3/Python-3.8.3.tgz
   tar xvf Python-3.8.3.tgz
   cd Python-3.8*/
   ./configure --enable-optimizations
   sudo make altinstall
   python3.8 --version
   

2. Python requirements installation:

   pip3.8 install PyYAML
   pip3.8 install sslkeylog
   

Running Event Collector service

vim /etc/systemd/system/wec.service

[Unit]
Description=WEC Service
After=network.target

[Service]
Type=simple
ExecStart=/usr/local/bin/python3.8 /opt/wec/sub_manager/run.py -c /etc/wec/config.yaml
Restart=on-failure
RestartSec=42s
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=wecservice

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl start wc

Windows host configuration

1. Open the Microsoft Management Console (mmc.exe), select File -> Add/Remove Snap-ins, and add the Certificates snap-in.

2. Select Computer Account.

3. Right-click the Personal node, and select All Tasks > Import.

4. Find and select the client certificate (client.p12) and import this file.

5. The PKCS #12 archive contains the CA certificate as well.

6. Move the CA certificate to the Trusted Root Certification Authorities node after the import.

7. Give NetworkService access to the private key file of the client authentication certificate:

8. To forward security logs:

   • In CompMgmt.msc, under Local Users and Groups, click Groups > Event Log Readers to open Event Log Readers Properties.
   • Add the “NETWORK SERVICE” account to the Event Log Readers group.

   8.1. For domain controller use “Group Policy Manger Editor” and edit: “Default Domain Controller Policy”:

   • From Computer Configuration > Policy, expand Windows Settings > Security Settings > Restricted Groups;
   • From contest menu add: Add Group
   • Add the following configuration:
     • Group = BUILTIN\Event Log Readers
       • Members = NT Authority\NETWORK SERVICE

9. Make sure collector server is reachable from windows machine

10. Run winrm qc and accept changes on windows machine

11. Run winrm set winrm/config/client/auth @{Certificate="true"} on windows machint to enable certificate authentication

12. Open gpedit.msc

13. Under the Computer Configuration node, expand the Administrative Templates node, then expand the Windows Components node, and then select the Event Forwarding node.

14. Select the SubscriptionManagers setting and enable it. Click the Show button to add a subscription (use the CA thumbprint you saved earlier):

    Server=https://<FQDN of the collector>:5986/wsman/SubscriptionManager/WEC,Refresh=<Refresh interval in seconds>,IssuerCA=<Thumbprint of the root CA>
    

    For example:

    Server=HTTPS://logserver.diplux.com:5986/wsman/SubscriptionManager/WEC,Refresh=60,IssuerCA=549A72B56560A5CAA392078D9C38B52458616D2
    5
    

    NOTE: If you wish to set up multiple subscriptions because you want to forward Windows events to multiple event collectors (such as WEC), then you can do that here.

15. Run the cmd console with administrative privileges and make following command

    gpupdate /force
    

Logstash pipeline configuration

Create directory for Event Collector pipeline configuration files:

mkdir /etc/logstash/conf.d/syslog_wec

Copy the following Logstash configuration files to pipeline directory:

cp 001-input-wec.conf /etc/logstash/conf.d/syslog_wec/
cp 050-filter-wec.conf /etc/logstash/conf.d/syslog_wec/
cp 060-filter-wec-siem.conf /etc/logstash/conf.d/syslog_wec/
cp 100-output-wec.conf /etc/logstash/conf.d/syslog_wec/

Enabling Logstash pipeline

To enable the syslog_wec Logstash pipeline edit the pipelie.yml file:

vim /etc/logstash/pipeline.yml

Add the following section:

- pipeline.id: syslog_wec
  path.config: "/etc/logstash/conf.d/syslog_wec/*.conf"

And restart Logstash:

systemctl restart logstash

Elasticsearch template

Install the Elasticsearch template for Event Collector data index:

curl -ulogserver:logserver -X PUT "http://localhost:9200/_template/syslog_wec?pretty" -H 'Content-Type: application/json' -d@template_wec.json

Building the subscription filter

1. Browse to Event Viewer

2. Right click Subscriptions and create subscription

3. Click on Select Events and choose the type of logs that you want, for example: Event Level, Event Logs, Include Exclude Event ID, Keyword, etc.

4. Switch to XML view tab;

5. Copy the value of the Select Path key, for example:

   <QueryList>
     <Query Id="0" Path="Security">
       <Select Path="Security">*[System[(Level=1  or Level=2 or Level=3) and (EventID=4672 or EventID=4624 or EventID=4634)]]</Select>
     </Query>
   </QueryList>
   

   string to copy:

   *[System[(Level=1  or Level=2 or Level=3) and (EventID=4672 or EventID=4624 or EventID=4634)]]
   

6. Paste the above definition into the Event Collector configuration file in filters section:

   vim /etc/wec/config.yaml
   

         filters:
           - source: 'Security'
             filter: '*[System[(Level=1  or Level=2 or Level=3) and (EventID=4672 or EventID=4624 or EventID=4634)]]'
   

   Restart Event Collector service

   systemctl restart wec
   

Cerebro Configuration

Configuration file: /opt/cerebro/conf/application.conf

• Authentication

   		auth = {
   		  type: basic
   		    settings: {
   		      username = "logserver"
   		      password = "logserver"
   		    }
   		}
  

• A list of known Elasticsearch hosts

   		hosts = [
   		  {
   		    host = "https://localhost:9200"
   		    name = "itrs-log-analytics"
   		    auth = {
   		      username = "logserver"
   		      password = "logserver"
   		    }
   		  }
   		]
  
   		play.ws.ssl {
   		  trustManager = {
   		    stores = [
   		      { type = "PEM", path = "/etc/elasticsearch/ssl/rootCA.crt" }
   		    ]
   		  }
   		} 
   		play.ws.ssl.loose.acceptAnyCertificate=true
  

• SSL access to cerebro

     http = {
       port = "disabled"
     }
     https = {
       port = "5602"
     }
  
     # SSL access to cerebro - no self signed certificates
     #play.server.https {
     #  keyStore = {
     #    path = "keystore.jks",
     #    password = "SuperSecretKeystorePassword"
     #  }
     #}
  
     #play.ws.ssl {
     #  trustManager = {
     #    stores = [
     #      { type = "JKS", path = "truststore.jks", password =       SuperSecretTruststorePassword"  }
     #    ]
     #  }
     #}
  

• service restart

  	systemctl start cerebro
  

• register backup/snapshot repository for Elasticsearch

     curl -k -XPUT "https://127.0.0.1:9200/_snapshot/backup?pretty" -H 'Content-Type: plication/      json' -d'
     {
       "type": "fs",
       "settings": {
         "location": "/var/lib/elasticsearch/backup/"
       }
     }' -u logserver:logserver
  

• login using curl/kibana

     curl -k -XPOST 'https://192.168.3.11:5602/auth/login' -H 'mimeType: application/      -www-form-urlencoded' -d 'user=logserver&password=logserver' -c cookie.txt
     curl -k -XGET 'https://192.168.3.11:5602' -b cookie.txt
  

Field level security

You can restrict access to specific fields in documents for a user role. For example: the user can only view specific fields in the Discovery module, other fields will be inaccessible to the user. You can do this by:

1. You can do this by adding the index to the field includes or field excludes in the Create Role tab.

• Includes are only fields that will be visible to the user.
• Excludes are fields that the user cannot see.

1. After that you will see new role in Role list tab.

1. Add your user to new Role

You can now log in as a user with a new role, the user in the Discovery module should only see selected fields.

Changing default language for GUI

The GUI language can be changed as follows:

1. Add .i18nrc.json to /usr/share/kibana/ directory:

   {
       "translations": ["translations/ja-JP.json"]
   }
   

2. Upload a translation to /usr/share/kibana/translations/ja-JP.json directory

3. Set the permission:

   # chown -R kibana:kibana /usr/share/kibana/translations/

4. Set in kibana.yml file:

   i18n.locale: "ja-JP"

5. Restart:

   # systemctl restart kibana

6. Finally the result should be as shown in the picture: