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).
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.
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.
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.
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.
FirewallPAPI is an open source firewall for Windows 2000 and above. It is a simple utility for filter network traffic.
A windows c++ program to test various libraries on various routers to forward ports on routers.
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.
Portfwd is an user-level tool which forwards incoming TCP connections and/or UDP packets to remote hosts.
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/
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.
Knmap is a KDE-based interface to the 'nmap' facility available at http://www.insecure.org/nmap. The main Knmap window provides for the entry of nmap options and the display of nmap-generated output.
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.
Qtfw is a Qt gui frontend for ipfw utility in FreeBSD. It helps configuring firewall in FreeBSD with a nice and comprehensive user interface.
Live Security/Forensics Linux Distribution, built from scratch and packed full of tools useful for vulnerability analysis, penetration tests, and forensic analysis.
The SWAP (Secure Wireless Access Point) project is intended for use in embedded appliances. These appliances will operate in the role of a WEP (wireless encryption protocol) and IPSEC enabled wireless access point, IPSEC VPN gateway, and firewall.
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
This is an extension to the project OpenGatekeeper. It enable the routing through the gatekeeper of the RTP (audio and video) and T.120 (data) traffic so no traffic is directly exchanged between communication endpoints.
Allows users of a Linux workstation to control which programs access the Internet. This can be done statically by listing them in a file or dynamically via a GUI dialog box that appears when a new program attempts to connect to the Internet.
Cluster-Manager Daemon that uses Netfilter clusterip to make active-active clusterip. Keep-alive notify messages are sent periodically to every clusternode. clusterip is configured automatically when there are changes in the cluster.
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.
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