pfSense packet filter
pfSense packet filter. filterlog emits a syslog envelope followed by packet-filter CSV.
Source and collection
Device logging subsystem / configured remote syslog or vendor export.
Record firmware version, enabled log categories, forwarding template, time zone and reliable transport settings.
Native example and provenance
upstream test fixture. Published example; no independent capture provenance claimed.
Original publisher / pinned upstream fixture — line 1
One complete record selected; values unchanged.
Pinned source commit: 9ae756f00f82786ac3496ce99c2dd288c5a5c031
Download the exact sample · Offline research kit
SHA-256: 5da4285e4bd41d947b96765f5e26e2308a594ed8ffc1b788cfd0fc4bc81f4b08
<134>Jul 3 19:10:30 filterlog[72237]: 146,,,1535324496,igb1.12,match,block,in,4,0x0,,63,12617,0,DF,6,tcp,60,10.170.12.50,175.16.199.1,49724,853,0,S,1891286705,,64240,,mss;sackOK;TS;nop;wscale
Structure and field interpretation
| Field/path | Serialized type |
|---|---|
raw record | csv |
- Envelope
- Priority, timestamp and hostname depend on the transport format.
- Message payload
- Use the exact vendor message type and version, not a generic whitespace split.
Investigation uses
- Review rule, interface, action, direction and protocol-specific fields.
- Compare device event time and collector time; monitor drops and preserve the original message.
Validation boundaries
Field positions after the common prefix depend on IP version and protocol.
This text sample passed byte-integrity and record-framing checks. Its field interpretation follows the cited format; a vendor-specific semantic parser has not been certified.
For a simulation, first parse this fixture offline, then create a separately labelled synthetic variant and test it against the intended collector in an isolated lab. Never replay public example identities or destinations into production.
Related sources
Ecosystem connections
- Telemetry Library — ATT&CK data components
- Detection Rules — candidate detection content
- Threat hunting — from intelligence to validated defense
- Practical security learning paths
- AdversaryGraph — evidence-led investigation
References
Sample provenance is linked above. Field availability and product behavior must be checked against the deployed version.