redWall Firewall is a free opensource firewall based on Gentoo linux distribution with Linux Kernel 2.6. redWall firewall runs from a bootable CD-ROM while the configs are saved on a USB Memory stick, Floppy drive or on the Hard Drive. Newer version has support to install the firewall on the Hard Disk. The redWall firewall has a good web interface.
Reporting on the firewall is based on a MySQL database (except for squid) and so presents the advantage of using the firewall also as a Management console or a logging console so multiple firewalls in the network can report back to the management station or do the logging onto the redWall firewall for better presentation and broader visibility of the whole network security.