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fwanalog is a shell script that parses and summarizes firewall logfiles. It currently (version 0.4.1) understands logs from ipf (tested with OpenBSD 2.8's and 2.9's ipf, also FreeBSD and NetBSD), Linux 2.2 ipchains and Linux 2.4 iptables. It has been tested on Debian GNU/Linux "sid" with bash and OpenBSD 2.8 and 2.9 with ksh as /bin/sh. It can be easily extended for other logfile formats, all it takes is editing two regular expressions. Sample report available here.

fwanalog is a shell script that parses and summarizes firewall logfiles. It currently (version 0.4.1) understands logs from ipf (tested with OpenBSD 2.8's and 2.9's ipf, also FreeBSD and NetBSD), Linux 2.2 ipchains and Linux 2.4 iptables. It has been tested on Debian GNU/Linux "sid" with bash and OpenBSD 2.8 and 2.9 with ksh as /bin/sh. It can be easily extended for other logfile formats, all it takes is editing two regular expressions. Sample report available here.