IBM QRadar via Fluentd¶
These instructions provide you with the example integration of Wallarm with the Fluentd data collector to further forward events to the QRadar SIEM system.
The most common logging scheme in complex systems consists of the following components:
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Data collector: accepts logs from several sources and forwards logs to the SIEM system
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SIEM system or log management systems: used to analyze logs and monitor the system status
Used resources¶
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Fluentd installed on Debian 11.x (bullseye) and available on
https://fluentd-example-domain.com
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QRadar V7.3.3 installed on Linux Red Hat and available with the IP address
https://109.111.35.11:514
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Administrator access to Wallarm Console in EU cloud to configure the Fluentd integration
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 Fluentd and QRadar services are cited as examples, they do not respond.
Fluentd configuration¶
Since Wallarm sends logs to the Fluentd intermediate data collector via webhooks, the Fluentd configuration should meet the following requirements:
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Accept the POST or PUT requests
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Accept HTTPS requests
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Have public URL
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Forward logs to IBM Qradar, this example uses the
remote_syslog
plugin to forward logs
Fluentd is configured in the td-agent.conf
file:
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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 QRadar and log output are configured in the
match
directive:- All event logs are copied from Fluentd and forwarded to QRadar at the IP address
https://109.111.35.11:514
- Logs are forwarded from Fluentd to QRadar in the JSON format according to the Syslog standard
- Connection with QRadar is established via TCP
- 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
- All event logs are copied from Fluentd and forwarded to QRadar at the IP address
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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 QRadar, 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"}'
QRadar configuration (optional)¶
In QRadar, the log source is configured. It helps to easily find Fluentd logs in the list of all logs in QRadar, and can also be used for further log filtering. The log source is configured as follows:
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Log Source Name:
Fluentd
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Log Source Description:
Logs from Fluentd
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Log Source Type: type of incoming logs parser used with Syslog standard
Universal LEEF
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Protocol Configuration: standard of logs forwarding
Syslog
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Log Source Identifier: Fluentd IP address
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Other default settings
A more detailed description of QRadar log source setup is available in the official IBM documentation.
Configuration of Fluentd integration¶
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Webhooks are sent to
https://fluentd-example-domain.com
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Webhooks are sent via POST requests
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The webhook integration has default advanced settings
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Webhooks sent to Webhook URLs are all available events: hits, system events, vulnerabilities, scope changes
More details on the Fluentd integration configuration
Example testing¶
To test the configuration, a new user is added in Wallarm Console:
Fluentd will log the event as follows:
The following data in JSON format will be displayed in the QRadar log payload: