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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.
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.
A powerful network security tool, easy, safe and totally free.
...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
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:
Not developed actively anymore. Team might still be around. Some unreleased changes on git. Outdated technology.
Peerguardian OS X:
Not developed anymore. We've lost contact with the OS X developer.
PeerGuardian Windows:
Not developed...
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.
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/
Easily turn a Ubuntu-based computer into a full linux router, complete with dhcpd, named/bind, iptables firewall, and packet inspection of the network traffic being routed.
Deep packet inspection for layer 2 (mac), layer 3 (ipv4, ipv6), layer 4 (icmp, tcp, udp), and layer 7 (application-specific). Summary of network flows and all layers of inspected traffic is stored in a database at 1-second intervals. This database is then mined to drive the Apache/PHP web interface.
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.
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
Our generous forever free tier includes the full platform, including the AI Assistant, for 3 users with 10k metrics, 50GB logs, and 50GB traces.
Built on open standards like Prometheus and OpenTelemetry, Grafana Cloud includes Kubernetes Monitoring, Application Observability, Incident Response, plus the AI-powered Grafana Assistant. Get started with our generous free tier today.
IPFIRE-wall is a framework that implements a network firewall. It can be used in desktop systems and in simple network configurations, providing a friendly graphical interface and a simple installation procedure. Also unprivileged users can personalize.
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 simple NAT(network address translator) for IPv6 (Linux only). Make sure if you really need it before using it. Functions: 1. IPv6 auto configuration; 2. TCP, UDP and ICMP-Echo port forwarding; 3. static port mapping for TCP and UDP.
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
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.
This product is no longer maintained:
The author created alternative tools: https://databunker.org/ and https://privacybunker.io/
GreenSQL is a database firewall engine used to protect Open Source Databases from SQL injection attacks. It works in proxy mode. Application logic is based on evaluating of SQL commands using risk score factors, as well as blocking of sensitive commands
Ptcap is a Unix daemon that captures traffic packet size, source, destination, and times and saves this data into a postgres (and now ODBC including mysql) database in near real time, from which traffic reports may be made.
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.
TRAP is a very innovative and advanced transparent proxy that verifies the integrity of your network communication. It offers a custom scripting language that allows the user full control over the decision making process.
l7f stands for "Layer7Firewall" which is a firewall-system, that protects your application on any protocol and fits its security needs flexibly. It can be used for example as web-application firewall.
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.
HTTP Tunnel that works with ANY HTTP proxy: no CONNECT method required! You can use the port redirector or Socks 4/4a/5 to connect outside your (restricted) LAN. An external web server is required, to be used as gateway.