Smoothwall is a best-of-breed Internet firewall/router, designed to run on commodity hardware and to provide an easy-to-use administration interface to those using it. Built using open source and Free software, it's distributed under the GNU Public License.
PeerGuardian - a privacy oriented firewall application
PeerGuardian is a privacy oriented firewall application. It blocks connections to and from hosts specified in huge blocklists (thousands or millions of IP ranges). Its origin seeds in targeting aggressive IPs while you use P2P. PeerGuardian Linux: Actively developed. However the team is very small and with few spare time. Contributors are welcome! Peerguardian OS X: Not developed anymore. We've lost contact with the OS X developer. New contributors are welcome! PeerGuardian Windows: Not developed anymore. It's highly recommended to use PeerBlock instead, which is a continuation of PeerGuardian's development in Windows, with bug fixes and support for Windows Vista and Windows 7. New contributors and/or collaboration with peerblock.com are welcome! PeerGuardian is an open project. Not only is its source code open for you to read, use, and modify - but the project is open for you to join and contribute in any form (code, documentation, bug reports, web and support).
VTun is the easiest way to create Virtual Tunnels over TCP/IP networks with traffic shaping, compression, and encryption. It supports IP, Ethernet, PPP and other tunnel types. VTun is easily and highly configurable. VPN, Mobile IP, Shaping, etc
A utility for detecting and resisting BIDIRECTIONAL ARP spoofing. It can anti-spoof for not only the local host, but also other hosts in the same subnet. It is as well a handy helper for gateways which don't work well with ARP.
iplist is a list based packet handler which uses the netfilter netlink-queue library (kernel 2.6.14 or later). It filters by IP-address and is optimized for thousands of IP-address ranges.
This is a daemon that emulates Microsoft's Internet Connection Service (ICS). It implements the UPnP Internet Gateway Device specification (IGD) and allows UPnP aware clients, such as MSN Messenger to work properly from behind a Linux NAT firewall.
FirewallPAPI is an open source firewall for Windows 2000 and above. It is a simple utility for filter network traffic.
This project will serve as a central hosting/bug tracking center for modifications to the SmoothWall.org firewall distribution. Support and information for the "mods" posted here can be found on the SmoothWall.org forums, the SmoothWall.org IRC server, or
PEStudio is a network protocol analysis and security auditing tool for Windows which allows you to apply scripts to winsock calls in order to filter / edit the data that travels to and from your computer, giving you complete control over your network.
A windows c++ program to test various libraries on various routers to forward ports on routers.
Portfwd is an user-level tool which forwards incoming TCP connections and/or UDP packets to remote hosts.
Live Security/Forensics Linux Distribution, built from scratch and packed full of tools useful for vulnerability analysis, penetration tests, and forensic analysis.
A fast PPTP proxy for any BSD with OpenBSD packet filter installed. It handles multiple transparent bi-directional tunnels, and can be chained from one proxy to another over several servers.
Debian packages for PeerGuardian Linux (including the GUI) and its precessor moblock/blockcontrol/mobloquer. PeerGuardian is a privacy oriented firewall application. It blocks connections to and from hosts specified in huge blocklists (thousands or millions of IP ranges). Its origins lie in targeting aggressive IPs while you use P2P. See http://sourceforge.net/projects/peerguardian/
Creates true post-admission network access control by regulating network access to admitted users on an as needed basis. Users cannot escalate privileges between micro-perimeters. Manageable, efficient and scalable for complex security environments.
IP Tables State implements the "state top" feature from IP Filter for IP Tables. "State top" displays the states held by your stateful firewall in a "top"-like manner, in real time. IPTState also has an option to print your state table once and NOTE: Development has moved to github: http://github.com/jaymzh/iptstate
SSHgate is a small daemon that transparently routes packets across SSH encrypted tunnels.
The goal of the project is to build a framework to allow Astaro firewall users to install optional software packages on their firewalls. (Astaro is a Linux-based firewall available from www.astaro.com.) Such a framework includes a package-management syst
KMyFirewall is a KDE/Qt Programm that tries to provide an easy to use and comfortable GUI for the Linux "iptables" command. An easy to use plugin architecture allows fast and easy development of rule option extentions.
The BACnet Firewall Router (BTR) is an application that combines BACnet routing capability with traffic management functions to carefully control access to building automation and control networks.
ITVal is an analysis tool for evaluating iptables firewall systems. It provides an easy way for a system administrator to verify that his firewall provides the protection he thinks it does. ITVal can analyze multiple NAT'd firewalls connected serially.
Sphirewall is a user centric analytical network firewall/router, its the only open source product that provides user/group and role based firewall rules with extensive reporting services
Its a free antivirus that will have all the features of a commercial antivirus software.
Anoubis is a Security Suite which implements a secured environment for applications. The core of the suite is an Application Firewall alongside with a Sandbox. Mechanisms to assure the authenticity of files, directories and applications are provided.
this firewall is a union of lot of tool distributed free for the OS NetBSD, OpenBSD and FreeBSD, use web services with xml-rpc and soap, and a desktop too based on Gtk