Open Source Unix Shell 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.

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.

BrazilFW is a mini Linux distribution designed to be used as a Firewall and Router that runs easily on older computers. An old PC running BrazilFW is much more powerful and efficient than commercial software for routing in offices and residences running on a "powerful" computer. BrazilFW is based on Coyote Linux, which was designed by Joshua Jackson who discontinued Coyote Linux in version 2.24 in August 2005. In that same month comes on the scene BrazilFW Firewall and Router (BFW) with version 2.24, which is led by "Claudio" and "Marcelo - Brazil", running only on floppy disks, and being 2.30.1 the last version with this support . The following versions, as well having automatic detection of network cards, only run on large capacity media, such as hard disk (HD). Versions in Development: * 2.33.x: Uses kernel 2.4.x and is developed by Marcinho Samurai. * 3.x: Uses kernel 4.x and is developed by WoshMan

Those who have read past the "Malware" warning can be assured there is absolutely no malware in this OS or in the download. This warning comes from the "netcat" binary included in the download as a DOS time client. Unfortunately netcat has code that is flagged as malware. FREESCO, a NAT/firewall router/server based on Linux and runs on a single 1.44MB floppy. Freesco is very powerful and versatile and can connect multiple home or small office networks to most types of Internet connections including dialup.

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.

FireHOL is a language (and a program to run it) that builds secure, stateful firewalls from easy-to-understand, human-readable configurations. The configurations stay readable even for very complex setups. FireQOS is a program that sets up traffic shaping from an easy-to-understand and flexible configuration file. Both programs abstract away the differences between IPv4 and IPv6. so you can concentrate on the rules you want. You can apply rules for IPv4 or IPv6, or both, as you need.

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.

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

Bootable CD Forensics/Virus Scanning/Recovery/PenTesting platform

The fwiptables is a one-file WIZARD, for IPTABLES with COMMAND-LINE, with CLI-MENU, with GUI-MENU, with GUI-ROLL, with GUI-SHELL. Since 2025, code more mature, and more stable, more clean, and with better code design, and with purpose educational.

OpenVoucher is an open source voucher management / hotspot system for authenticating guests in your wifi or cable network. It is designed to be easy to use for anyone who wants to issue vouchers. For further information and installation how to's, see the project's homepage. The source code is maintained on Github.

MailCleaner is no longer maintained. It will return soon in another form. [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,...) You can install now MailCleaner within the following virtual environments: qcow2 (KVM, Proxmox, OpenStack, Xen) ova (OVA, VMware ESXi, VMware Workstation, Fusion) vhd (Asure, VirtualPC) vhdx (Hyper-V) AMI (Amazon) Dedicate a server to MailCleaner, and you will have a working professional mail filter in le

User written Addons and Updates for the IPCop Firewall.

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

The ADSL optimizer is an accurate packet scheduling solution for ADSL connections, based on Linux and HTB. The solution guarantees low latency while maintaining full utilization of both upstream and downstream, without wasting link capacity.

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

Ferramenta web para administração de regras de firewall para pequenas redes que inclui scripts de inicialização de redes, configurações de integração com Squid e um Balanceador de Cargas Simples. Baseado no projeto squidadmin.

EasyBSD is a modular automation script designed to assist in the extensive post installation process that is required in FreeBSD. The following are modules that are included with EasyBSD, Checks, Update, Security, Networking, Firewall, and more...

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

bastion-firewall is a Netfilter based firewall for Linux. It can generate graphical stats of all the rules traffic in the firewall with Rrdtool and it's integrated with the Snort Inline IPS. It's written in the bash and C programming languages.

A light script to make a black-list system troug iptables. You can create the black-list and manage it troug this program. Please read README file to know better this script.

netadm project provides monitoring tools for network performance and network control system. the above monitoring tool is called 'npt(Network Perfermance Tool) and the above network control system is called 'gwc (GateWay Control~). npt program provide

9Muri is an higly configurable firewall script developed on Red Hat Fedora Core 4 and 6. It's developed in Perl and Shell script.

ADSL4Linux is a program to connect your Linux box via ADSL to the internet in as few steps as possible. This is all done in the easiest possible way. Also contains two Firewalls (ipchains and iptables).

Alfandega is a strong and Modular IpTables Firewall. It provides NAT, port-forwarding, spoofing list, blacklist of crackers and spywares sites, protection for tcp/udp scans, DOS/DDOS and Smurf attacks, TCP tuning, DHCP and PPP support and much more.