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Micro Focus ArcSight Logger via Fluentd

These instructions provide you with the example integration of Wallarm with the Fluentd data collector to further forward events to the ArcSight Logger system.

The most common logging scheme in complex systems consists of the following components:

  • Data collector: accepts logs from several sources and forwards logs to the SIEM system

  • SIEM system or log management systems: used to analyze logs and monitor the system status

Webhook flow

Integration with the Enterprise version of ArcSight ESM

To configure forwarding logs from Fluentd to the Enterprise version of ArcSight ESM, it is recommended to configure the Syslog Connector on the ArcSight side and then forward logs from Fluentd to the connector port. To get a more detailed description of the connectors, please download the SmartConnector User Guide from the official ArcSight SmartConnector documentation.

Used resources

Wallarm Cloud IP addresses

To provide Wallarm Cloud access to your system, you may need a list of its public IP addresses:

34.94.85.217
34.94.51.234

34.141.230.156
34.91.138.113

Since the links to the ArcSight Logger and Fluentd services are cited as examples, they do not respond.

ArcSight Logger configuration

ArcSight Logger has logs receiver Wallarm Fluentd logs configured as follows:

  • Logs are received via UDP (Type = UDP Receiver)

  • Listening port is 514

  • Events are parsed with the syslog parser

  • Other default settings

Configuration of receiver in ArcSight Logger

To get a more detailed description of the receiver configuration, please download the Logger Installation Guide of an appropriate version from the official ArcSight Logger documentation.

Fluentd configuration

Since Wallarm sends logs to the Fluentd intermediate data collector via webhooks, the Fluentd configuration should meet the following requirements:

  • Accept the POST or PUT requests

  • Accept HTTPS requests

  • Have public URL

  • Forward logs to ArcSight Logger, this example uses the remote_syslog plugin to forward logs

Fluentd is configured in the td-agent.conf file:

  • Incoming webhook processing is configured in the source directive:

    • Traffic is sent to port 9880
    • Fluentd is configured to accept only HTTPS connections
    • Fluentd TLS certificate signed by a publicly trusted CA is located within the file /etc/ssl/certs/fluentd.crt
    • Private key for TLS certificate is located within the file /etc/ssl/private/fluentd.key

  • Forwarding logs to ArcSight Logger and log output are configured in the match directive:

    • All event logs are copied from Fluentd and forwarded to ArcSight Logger at the IP address https://192.168.1.73:514
    • Logs are forwarded from Fluentd to ArcSight Logger in the JSON format according to the Syslog standard
    • Connection with ArcSight Logger is established via UDP
    • Fluentd logs are additionally printed on the command line in JSON format (19-22 code lines). The setting is used to verify that events are logged via Fluentd
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<source>
  @type http # input plugin for HTTP and HTTPS traffic
  port 9880 # port for incoming requests
  <transport tls> # configuration for connections handling
    cert_path /etc/ssl/certs/fluentd.crt
    private_key_path /etc/ssl/private/fluentd.key
  </transport>
</source>
<match **>
  @type copy
  <store>
      @type remote_syslog # output plugin to forward logs from Fluentd via Syslog
      host 192.168.1.73 # IP address to forward logs to
      port 514 # port to forward logs to
      protocol udp # connection protocol
    <format>
      @type json # format of forwarded logs
    </format>
  </store>
  <store>
     @type stdout # output plugin to print Fluentd logs on the command line
     output_type json # format of logs printed on the command line
  </store>
</match>

A more detailed description of configuration files is available in the official Fluentd documentation.

Testing Fluentd configuration

To check that Fluentd logs are created and forwarded to ArcSight Logger, the PUT or POST request can be sent to Fluentd.

Request example:

curl -X POST 'https://fluentd-example-domain.com' -H "Content-Type: application/json" -d '{"key1":"value1", "key2":"value2"}'

Fluentd logs:
Logs in Fluentd

Event in ArcSight Logger:
Logs in ArcSight Logger

Configuration of Fluentd integration

  • Webhooks are sent to https://fluentd-example-domain.com

  • Webhooks are sent via POST requests

  • The webhook integration has default advanced settings

  • Webhooks sent to Webhook URLs are all available events: hits, system events, vulnerabilities, scope changes

Webhook integration with Fluentd

More details on the Fluentd integration configuration

Example testing

To test the configuration, a new user is added in Wallarm Console:

Adding user

Fluentd will log the event as follows:

Fluentd log about new user

The following entry will be displayed in ArcSight Logger events:

Events in ArccSiight Logger