pflogx is a simple tool to export OpenBSD's packet filter logs to XML files. 
It reads a binary logfile generated by the pf logging daemon (pflogd) to 
generate a human-readable and exploitable XML file. 

Using an XSLT processor you can convert this XML file to any other 
format (HTML, CSV, SQL, ...).

WWW: http://akldev.free.fr/pflogx/