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Linsec is a shell script firstly designed for slackware linux 10 and now supports most of linux distros. Linsec improves security of Linux systems (kernel parameters, network behaviour, iptables, critical files permissions)
Proxmox Firewall (Proxwall) is a flexible Linuxfirewall based on Shorewall and many other open source tools. It is designed to install on commodity hardware within minutes. It can handle complex and fast changing network environments.
[not maintained anymore] Jay's Iptables Firewall is a script with support for multiple (external/internal) interfaces, TCP/UDP/ICMP control, masquerading, synflood control, spoofing control, port forwarding, VPNs (vtund), ToS, denying hosts, ZorbIPTraff
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.
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.
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.
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.
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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.
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.
A python binding for the iptables tools.
The binding allows direction manipulation of the iptables through an object oriented and transaction based manner.
The binding removes the need to call iptable on the command line in python applications.
A daemon that creates realtime dynamic, expirable iptables rules to block/drop IP addresses attempting brute-force breakin attacks on a linux host via ssh or other mechanism. Highly customizable and extensible.
Frankenwall is a bash shell script intended to create a highly secure IPTables based linuxfirewall/router with QOS/traffic shaping/bandwidth management. Be certain you know EXACTLY what your network needs before using Frankenwall. Wimps need not apply.
Simple-to-use, dynamic, rule-based firewall addition. Uses QUEUE/userspace to dynamically approve or drop packets based on custom rules. With frequency caching, friend/foe indication, loose IP matching, and customizable logging.
FireWise Utilities (FWU) is a suite of tools for dynamically generating firewall tables in either binary or script format for several operating systems. Features in dev: iptables, ip6tables, ipfw, pf, SHA2 bin hashing and LZO bin compression
Authenticated network access: a lightweight network firewall authentication tool. Horatio is built around a custom Perl webserver and the Linuxfirewall tools.
IP Blocker is an incident response tool that automatically updates access control lists on Cisco routers and other devices. Web and command line interfaces are both supported, as is logging, email notification, and automatic expiration of blocks.
XSServer is a system, which is intented to be an easy way to configure dhcp, iptables and squid in order to make possible to have those working together at once, generating the needed config files for each.
Sentry Firewall CD-ROM is a Linux-based bootable CD-ROM suitable for use as an inexpensive and easy to maintain Firewall or IDS Node. The system is designed to be immediately configurable for a variety of different operating environments via a config fil
Green Screen: A Linux based Advanced Syslog Server for Juniper NetScreen Firewalls - Can be expanded later to support other products. It can capture syslog messages, parse them, store them in a MySQL database. A Web GUI interface is also included.
Barrier is designed to manage linux-box as firewall-qos router. It is sophisticated tool intended to manage your linux-box's iptables rules as also your QoS policy. Actualy QoS plugin for Barrier is based on htb
Development area for GNU/Linux 2.6.x for the KS8695 ARM SoC. Covers kernel patches, drivers for serial, Ethernet, PCI, GPIO, watchdog subsystems, and drivers for optional PCI based devices such as USB, WiFi, WiMAX, IPSec, SSL, and RSA devices.