Open Source C++ 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.

Firewall Builder is a GUI firewall management application for iptables, PF, Cisco ASA/PIX/FWSM, Cisco router ACL and more. Firewall configuration data is stored in a central file that can scale to hundreds of firewalls managed from a single UI. A message from project maintainers: After working on Firewall Builder for many years it is with some sadness that Vadim and I are announcing that we have suspended all development activity for this project. Firewall Builder has been a great project to work on and we have truly appreciated all the support and positive feedback that the user community has provided. Without you we wouldn’t have been able to keep things going this long. You might be wondering why we are doing this... We had an exciting opportunity come up to start a company developing advanced security automation solutions. This was a chance of a lifetime that we just couldn’t pass up and unfortunately it means that we no longer have time available to work on improv

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 Outdated technology.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 anymore. It's highly recommended to use PeerBlock instead, which is a continuation of PeerGuardian's development in Windows, with bug fixes and support for Windows Vista and Windows 7. Collaboration with peerblock.com is welcome! PeerGuardian is an open project. Not only is its source code open for you to read, use, and modify - but the project is open for you to join and contribute in any form (code, documentation, bug reports, web and support).

A java wrapper for popular "libpcap" and "WinPcap" libraries. Accurate full API translation. Packet buffers delivered with no copies. Send custom packets, gather statistics. Comprehensive and easily extensible DPI engine.

ProxySQL is an open source, high performance, high availability, database protocol-aware proxy for MySQL. It was created due to a lack of high performance open source proxies, and is able to scale millions of connections across hundreds of thousands of backend servers, all while getting the freedom of being open source. ProxySQL provides end-to-end MySQL connection handling, real-time statistics and database traffic inspection. It's got failover detection, rich query rule definitions, and a database firewall that protects your database from malicious activity or problematic application deployments. ProxySQL is trusted by numerous organizations throughout the world to meet their MySQL scalability and High Availability goals.

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

Blocks "known bad" IP-addresses from accessing your machine, especially corporate/governmental agencies. This is a fork of PeerGuardian 2, fixing various Vista/Win7 problems.

LumoGate is a professional Hotspot Billing Software solution designed to provide secured and regulated Wifi Internet access to your customers. For anyone trying to contact me, directly report a bug or feature request for LumoGate you can contact me on: +233242914426 Whatsapp LumoGate locks down Internet access to anyone that's not authenticated or has not agreed to EULA/accepted use policies. LumoGate interrupts Internet access, lets any unauthorized user login, then Internet access is restored. LumoGate is based on Captive Portal Technology. LumoGate acts as a hotspot firewall and management software that control authentication, bandwidth management, session usage, internet traffic log . LumoGate is the simplest yet complete, intuitive tool to manage your public Wifi HotSpot in Internet Cafes, Schools, Hotels, Restaurants, etc Please donate to support this project. Cheers !!! License: Creative Commons Attribution-NonCommercial-NoDerivatives V4.0

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.

FirewallPAPI is an open source firewall for Windows 2000 and above. It is a simple utility for filter network traffic.

Windows Port Knocking. A Windows implementation of port knocking developed to work alongside an existing firewall (the free CHX-I Packet Filter v3.0).

VTD-XML is the next generation XML parser/indexer/editor/slicer/assembler/xpath-engine that goes beyond DOM, SAX and PULL in performance, memory usage, and ease of use.

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.

PEStudio is a network protocol analysis and security auditing tool for Windows which allows you to apply scripts to winsock calls in order to filter / edit the data that travels to and from your computer, giving you complete control over your network.

iSafer firewall is used to protected your PC against spywares, spamwares. It is also a good example for software developers to understand the basic knowledge about firewall. NOTE: Visit http://isafer.sourceforge.net to see more...

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.

A windows c++ program to test various libraries on various routers to forward ports on routers.

CartoReso intends to facilitate enterprise computer network mapping.

It is a versatile DNS Proxy server with DNS firewall which filters DNS traffic between local computer and DNS servers with flexible rules, supports blocking by IP geography, caching, import/export rules into XML. With a click of a button acts as a DNS proxy (or DNS server), supports multiple client authentication methods, calculates statistics for DNS servers and proxy clients, supports load balancing between multiple upstream DNS servers.

IP Tables State implements the "state top" feature from IP Filter for IP Tables. "State top" displays the states held by your stateful firewall in a "top"-like manner, in real time. IPTState also has an option to print your state table once and NOTE: Development has moved to github: http://github.com/jaymzh/iptstate

Super P2P firewall 32/64 bits (driver + aplication)

KMyFirewall is a KDE/Qt Programm that tries to provide an easy to use and comfortable GUI for the Linux "iptables" command. An easy to use plugin architecture allows fast and easy development of rule option extentions.

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

A fast PPTP proxy for any BSD with OpenBSD packet filter installed. It handles multiple transparent bi-directional tunnels, and can be chained from one proxy to another over several servers.

Portfwd is an user-level tool which forwards incoming TCP connections and/or UDP packets to remote hosts.