PFilter filters OpenBSD PF log files parsed by tcpdump and prints colored messages. Both /var/log/pflog and pflog0 are supported for real-time logging. Tested on OpenBSD 3.2.
You can download it from the following link: https://packetstormsecurity.com/files/download/30033/pfilter.pl
Source: https://packetstormsecurity.com/files/30033/pfilter.pl.html