Saw over at DistroWatch that Gibraltar 0.99.7, a Debian-based Linux firewall, has been released

This is a feature and bug-fix release at the same time. Due to fixing of the kernel security issue (information leak), it is recommended to upgrade as soon as possible. Changes: Recompiled the kernel with many patches, now fixing the recently discovered information leak in multiple Ethernet card modules and the ptrace vulnerability. The new kernel is also patched with newer wireless extensions for better WLAN access point functionality.

Download
Changelog
Package overview