Open Source Perl Firewall Software

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.

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.

The IPCop Firewall is a Linux firewall distribution. It is geared towards home and SOHO users. The IPCop web-interface is very user-friendly and makes usage easy.

Endian Firewall Community (EFW) is a "turn-key" linux security distribution that makes your system a full featured security appliance with Unified Threat Management (UTM) functionalities. The software has been designed for the best usability: very easy to install, use and manage and still greatly flexible. The feature suite includes stateful packet inspection firewall, application-level proxies for various protocols (HTTP, FTP, POP3, SMTP) with antivirus support, virus and spam-filtering for email traffic (POP and SMTP), content filtering of Web traffic and a "hassle free" VPN solution (based on both OpenVPN and IPsec).

BASE is the Basic Analysis and Security Engine. It is based on the code from the Analysis Console for Intrusion Databases (ACID) project. This application provides a web front-end to query and analyze the alerts coming from a SNORT IDS system.

An iptables based firewall for systems running the Linux 2.4 or later kernel. Very flexible configuration allows the firewall to be used in a wide variety of firewall/gateway/router and VPN environments.

Enables tunneling of network connections through restrictive HTTP proxies. Features: Portmapping, SOCKS4, SOCKS5, web-based admin interface, possibility to use standalone server (perl) or hosted server (PHP), optional authorization from LDAP or MySQL

Two tools able to edit your ipfilter.dat . These tools are able to edit your ipfilter.dat in order to check for big ranges and to check adjacent ranges . From the creators of ipfilterX , Nexus23 Labs . - Updates in Progress -

MailCleaner Open Source Edition is now discontinued but will continue under the spamtagger project https://github.com/SpamTagger [antispam] MailCleaner is an anti-spam / anti-virus filter SMTP gateway with user and admin web interfaces, quarantine, multi-domains, multi-templates, multi-languages. Using Bayes, RBLs, Spamassassin, MailScanner, ClamAV. Based on Debian. Enterprise ready. MailCleaner is an anti spam gateway installed between your mail infrastructure and the Internet. It includes a complete GNU/Linux OS and a graphical web interface for user and administrative access. It comes in the form of virtual machine templates.. - fully compatible with any SMTP mail server (Exchange, Zimbra, O365,...)

Bypass is an IP forwarding/tunneling tool which can be used where limited bypassing of a firewall is necessary, but relaxing the restrictions in the actual firewall is not an option. The aim is for bypass to be automatic and transparent.

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

360-FAAR (Firewall Analysis Audit and Repair) is an offline, command line, firewall policy manipulation tool to filter, compare to logs, merge, translate and output firewall commands for new policies, in Checkpoint dbedit, Cisco ASA or ScreenOS commands, and its one file! Read Policy and Logs for: Checkpoint FW1 (in odumper.csv / logexport format), Netscreen ScreenOS (in get config / syslog format), Cisco ASA (show run / syslog format), 360-FAAR compares firewall policies and uses CIDR and text filters to split rulebases / policies into target sections and identify connectivity for further analysis. 360-FAAR supports, policy to log association, object translation, rulebase reordering and simplification, rule moves and duplicate matching automatically. Allowing you to move rules to where you need them. Build new rulebases from scratch with a single 'any' rule and log files, with the 'res' and 'name' options. Switch into DROPS mode to analyse drop log entries.

A firewall configuration project based on Linux 2.6.x and iptables. It has a web interface with an intuitive Webmin module, or you can edit a XML file. You can define the different firewall elements (zones, hosts, networks) and then set the services

User written Addons and Updates for the IPCop Firewall.

[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

AMaViS is a script that interfaces a mail transport agent (MTA) with virus scanners.

SquidRestrict is a Web based tool that allows multiple time restrictions to be placed on internet usage for firewalls that use the Squid Web Cache (http://www.squid-cache.org/).

Netdeep Secure is a Linux distribution with focus on network security. Is a Next Generation Open Source Firewall, which provides virtually all perimeter security features that your company may need. It offers Web content filters, ensuring better performance of the network, allowing users to use the service efficiently and securely, providing a deep control of the use of the Web access service, blocking access to unwanted websites, Virus, Spam, Applications and intrusion attempts. Its configuration is made entirely by the web interface.

Net-Policy is a highly-scalable, role-and-policy based network management system. Net-Policy aims to be an easy-to-use, full-fledged management station capable of configuration, monitoring, and notification collection and aggregation via the use of SNMP

A set of tools (proxy, analyzer, proxy database maintenance tools) in Perl. Of interest to those whose Internet access is blocked or censored. The tools provide an 'abstraction' of uncensored outside services, inside the censoring firewall/proxy.

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.

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

Snort2Pf is a small Perl daemon which greps Snort's alertfile and blocks the "naughty" hosts for a given amount of time using pfctl.

Lomalarga is a port forwarding (VPN-like) service based on SSH & Linux. Based entirely on open source. The client is written in C# and the administration is based on Linux/lighttpd/PostgreSQL/PHP, with the UI written with Google Web Toolkit.

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.