Vendor - pfSense
All pfSense based firewalls
Product
| Ref |
Link |
| Splunk Add-on |
https://splunkbase.splunk.com/app/1527/ |
| Product Manual |
https://docs.netgate.com/pfsense/en/latest/monitoring/copying-logs-to-a-remote-host-with-syslog.html?highlight=syslog |
Sourcetypes
| sourcetype |
notes |
| pfsense:filterlog |
None |
| pfsense:* |
All programs other than filterlog |
Sourcetype and Index Configuration
| key |
sourcetype |
index |
notes |
| pfsense |
pfsense |
netops |
none |
| pfsense_filterlog |
pfsense:filterlog |
netfw |
none |
Filter type
Source does not provide a hostname, port or IP based filter is required
Setup and Configuration
- Install the Splunk Add-on on the search head(s) for the user communities interested in this data source. If SC4S is exclusively used the addon is not required on the indexer.
- Review and update the splunk_metadata.csv file and set the index and sourcetype as required for the data source.
- Configure a dedicated SC4S port OR configure IP filter
- Refer to the Splunk TA documentation for the specific customer format required for proxy configuration
- Select TCP or SSL transport option
- Ensure the format of the event is customized per Splunk documentation
Options
| Variable |
default |
description |
| SC4S_LISTEN_PFSENSE_TCP_PORT |
empty string |
Enable a TCP port for this specific vendor product using a comma-separated list of port numbers |
| SC4S_LISTEN_PFSENSE_UDP_PORT |
empty string |
Enable a UDP port for this specific vendor product using a comma-separated list of port numbers |
| SC4S_ARCHIVE_PFSENSE |
no |
Enable archive to disk for this specific source |
| SC4S_DEST_PFSENSE_HEC |
no |
When Splunk HEC is disabled globally set to yes to enable this specific source |
Verification
An active proxy will generate frequent events. Use the following search to validate events are present per source device
index=<asconfigured> sourcetype=pfsense:filterlog | stats count by host