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Yuri Slobodyanyuk
2021-03-20 13:49:41 +00:00
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PF-firewall-configuration-and-debug-cheat-sheet.adoc
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@@ -22,6 +22,22 @@ Author: Yuri Slobodyanyuk, admin@yurisk.info
|*pfctl -nf /etc/pf.conf*
|Parse security rules stored in a file without installing them (dry run).
|*pfctl -F all*
*pfctl -F rules*
*pfctl -F nat*
*pfctl -F states*
| Flush, accordingly:
- Everything (filter rules, nat, and sateful table)
- Rules only (stateful table of existing connections stay intact)
- NAT rules only
- Stateful table
|*pass in quick on egress from 62.13.77.141 to any*
| 'Quick' rule, means allow this traffic to pass through on all interfaces, otherwise we would need 2nd rule allowing this traffic in _outgoing_ direction on egress interface, to allow destined to ANY port/protocol with the source being `62.13.77.141` and destination being ANY IP address behind the PF firewall. NOTE: here, `egress` is not a direction, but a group name to which the interface in question (`em0`) belongs to. In OpenBSD you set it in a file `/etc/hostname.em0: group egress` or in real-time with the command: `ifconfig em0 group egress`.