All-in-one multi-platform Firewall with next-generation deep packet inspection technology. Includes IPSec VPN, Internet gateway (NAT), remote management, IDS, virus protection and PPPoE. Supports Windows, Linux and OS/2. Has a personal version.

Creator of firewall and internet dailer software for multiple operating systems.

A free embedded firewall software package based on FreeBSD.

Customized FreeBSD based software solution to turn a Pentium class computer into a firewall. Uses a web browser based administration and a 'wizards' type setup. Available with or without a VPN option.

Working over standard FreeBSD services, provides flexibility, ease of use and performance to corporate networks. NetBoz is a live CD and does not use a hard disk, while all the settings are stored on a write-protectable diskette, making it virtually i...

Creators of the fBuilder firewall configuration utility for Linux. Includes services, product range, client intranet, screenshots, a profile, and forums.

Open-source software for firewall and network traffic filtering including peer-to-peer applications.

VPN FireWall, using the highest level of encryption, and industry standard IPSEC technology, ensures that no one can snoop your passwords or sensitive data, without paying the costs of expensive routers and dedicated networks.

UNIX/Linux open firewall project that intended to develop a free, secure and OS independent firewall system. Though discontinued the project site remains for historic reference.

First open source firewall for windows. Includes binaries and sources code. For Windows 2000 and later.