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RouteIt can help you setup your firewall by generating iptables rules, it can setup Network Address Translation (NAT) and bridge rules in iptables, it can also help you set traffic limitations and more, from a simple web interface.
skyPipes Advanced Router is a GNU/Linux/Apache/SSL/PHP/PostgreSQL web app that manages a combination of NAT, Static Alternative Routes, and Dead Gateway Detection rules to balance LAN/DMZ traffic across multiple ISP connections with redundant failover.
IASON is designed to analyze DNS, log files and data streams. IASON works in conjunction with a network firewall and IDS (Intrusion Detection System) software to block attacks while allowing legitimate requests to reach a domain name server.
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A client-server software for centralized file exchange and sychronisation. By using XML-RPC/HTTP based communication for file transfer WFS may prevent from problems usually arising with restrictive firewall settings.
etherdam is an IPTables firewall configuration engine; it implements a primitive (and hopefully simple) scripting language as an alternative to direct use of iptables.
nf-HiPAC is a high performance packet filter for Linux. It provides the same rich feature set as iptables but uses an advanced algorithm to minimize the number of memory lookups per packet.
X-Firewall is an Iptables Firewall and Masquerading Configuration Utility for Linux. It was designed to allow a beginner to build a custom firewall with little or no iptables experience.
At this point it works on virtually every distribution of linux :)
The Knock Project is a collection of security tools providing increased client/server authentication. The server and its functionality is provided by the netfilter kernel interface. Included are the daemon, a GNU/Linux client and a Windows client.
The doorman guards the door of a server, manipulating firewall rules to admit only recognized parties.
Allows Silent Running - a server with all ports CLOSED.
Linux-BSD-OSX server & client; C source & docs + Windows client binary. GPL.
The PCX Firewall is a perl script that generates a customized shell script to start, stop and restart the IPTables based firewall. You can build a MULTI-homed system or a Standalone system. DNAT, SNAT, Redirection, Blocking, etc. are all supported.
The goal of WallFire is to build a very general and modular firewalling application based on netfilter or any kind of low-level framework. It will provide a multi-language API, command line and interactive tools as well as X11 or HTML front-ends.
Started as part of the Google Summer of Code 2005, this tool adjusts security settings on Linux systems, including firewall and SELinux policies. This tool aims to replace the system-config-securitylevel tool from Red Hat and Fedora Core systems.
The Titan Firewall is an interface Web to manage firewall based on Linux with iptables. It supports filtrate of packages, NAT, logs, VPN's... Implemented in Java and jsp.
BastionX is a suite of bash scripts which provide a firewall system using netfilter on linux.
Some of the supported features are flow control & QoS, local & WAN ip blacklists, dynamic trusted hosts, DMZ feature, auto detection of interfaces.
IPTview is an IPTables emulator, it shows how the user-defined virtual 'packet' traverses the tables and chains and where it gets in the end. This is mainly for educational purposes, but could also be used for testing the configuration of your firewall.
TunnelTools is a set of perl scripts to allow anonymous rsync and CVS access from machines inside a firewall by tunneling over an ssh connection to a host outside the firewall.
Xianc gets statistics mostly from a firewall program like iptables but it supports a file as input too. The byte counter from the an interface in Window can also be used. Xianc can show bandwith usage, stores it in a cache file to survive a reboot, and c