HTTP proxy to block ads and customize webpages
Privoxy is a non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. Privoxy has a flexible configuration and can be customized to suit individual needs and tastes. It has application for both stand-alone systems and multi-user networks.
This tools help you migrating existing Checkpoint Firewall 1 Installation and Rulesets to Linux or *BSD based Firewall. This is done by converting the Rulebase- and the Objects- Database from Checkpoint to the FirewallBuilder XML Format.
GNU Firewalling tools. Formerly known on Freshmeat as ipchains-firewall.
SmartFilter is a Iptables wrapper written in Perl. It can pro-actively protect against ssh, ftp, and http break in attempts. It also supports firewall rules based on dynamic DNS domain names. A great solution for secure access for people on the move.
The Plague provides a web UI to a MySQL db of parsed syslog data. The focus has been security reporting. The logs supported (so far) are NetScreen firewalls, Cisco routers and switches and PIXen, Gauntlet firewalls.
myNetWatchman Perl Agent is a program that is designed to capture rejected packet information from various firewall logs and forward this attack information to central analysis servers at myNetWatchman.com.