Isinglass-hzd
- Linux-based firewalls and IsinGlass, is a script meant to make the average user's Linux machine more secure when connected to the Internet, for example, when dialing up via a local ISP.
- http://freshmeat.net/projects/isinglass-hzd/

Sygate Enterprise
- Host based, packet filtering firewall product.
- http://www.symantec.com/enterprise/products/overview.jsp?pcid=1001&pvid=1303_1

StoneGate High-Availability Firewall and VPN
- An enterprise-class firewall with integrated VPN, high-availability and load-balancing. Load-balancing includes both connections and servers.
- http://www.stonesoft.com/en/products_and_solutions/products/fw/

Cyberix
- Offers an integrated security system with filtering, detection and management capabilities.
- http://cyberix.in/

Bulwark Systems
- Offers SecuraNET unified threat management solutions.
- http://www.bulwarks.com/

Intoto Inc
- iGateway Security solutions include ICSA certified Stateful Inspection Firewall integrated with NAT & ALGs, ICSA certified Virtual Private Network (VPN) and Network Intrusion Detection System (NIDS).
- http://www.intotoinc.com/

Cequrux Technologies BV
- Provides firewalland VPN security software for internet, intranet and extranet applications.
- http://www.cequrux.com/

pfSense
- A free firewall based on Packet Filter (pf) and FreeBSD 6.
- http://www.pfsense.org/

M0n0wall
- A free embedded firewall software package based on FreeBSD.
- http://www.m0n0.ch/

Endian Firewall
- A Linux based security distribution with web based management, statefull packet inspection, proxies, antivirus, antispam, content filtering and VPN.
- http://www.efw.it/

Vicomsoft Firewall and Internet Security Software
- FAQs, White Papers, case studies and trial downloads of firewall and filtering software.
- http://www.vicomsoft.com/

F/X Communications
- Creator of firewall and internet dailer software for multiple operating systems.
- http://www.fx.dk/

Firestarter Linux Firewall
- A graphical interfaced Open Source firewall for Linux.
- http://www.fs-security.com/

Open Source Firewall for Windows
- First open source firewall for windows. Includes binaries and sources code. For Windows 2000 and later.
- http://programmerworld.net/personal/firewall.htm

Bastion-firewall project
- A netfilter-based firewall configurable through config files. May be used as a normal firewall or as a firewall script generator. Integrated with the Snort inline IDS.
- http://bastionfirewall.sourceforge.net/

IPCop Firewall Addons
- A collection of binary addons for IPCop Firewall as well as some relevant site references.
- http://www.tom-e.de/

Chris Lowth Firewall and Filtering Tools
- Open-source software for firewall and network traffic filtering including peer-to-peer applications.
- http://www.lowth.com/

APF Firewall
- A policy based iptables firewall system designed for ease of use and configuration. Includes information on the firewall, downloads and related articles and software.
- http://www.rfxnetworks.com/apf.php

IBM SecureWay Firewall
- A mature product containing filtering, proxy, and circuit level gateway. Includes a Network Security Auditor, VPN IPSec support and disables unsafe applications, real-time performance statistics and log monitoring and central management capability. Availa
- http://www-306.ibm.com/software/security/firewall/

NetBoz Firewall
- 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 inmun
- http://www.netboz.net/

NetWolves
- Provides a secure Internet gateway solution for LAN-to-Internet connectivity. Offers an ICSA-certified firewall and IPSec VPN with client VPN support and dynamic VPN routing as well as intelligent failover with high availability. Other filtering services
- http://www.netwolves.com/

Evidian NetWall
- A manageable business-oriented firewall and VPN software solution to protect each IT zone according to its specific security requirements. DdMZ architecture allows tight control in compliance with overall business policy. Available overview, FAQs, Benefit
- http://www.evidian.com/security/netwall/index.htm

The Firewall Toolkit (FWTK)
- A set of proxies to build a firewall. Provides information and software on building free firewall and security solutions.
- http://www.fwtk.org/

Falcon Firewall Project
- 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.
- http://falcon.naw.de/

InfoExpress
- Makers of the CyberArmor layered security architecture personal firewall. Includes a profile, product range, product specifications, news, and software downloads.
- http://www.infoexpress.com/

LutelWall
- Linux IPtables shell script written in bash for use as a stateful firewall and NAT/masquerade router for single or multiple subnets networks. It shares access to a internet connection from multiple workstations.
- http://firewall.lutel.pl/

LEAF
- The Linux Embedded Appliance Firewall, an application based on iptables, with a number of optional modules including logging and intrusion detection.
- http://leaf.sourceforge.net/

InJoy Firewall
- 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.
- http://www.fx.dk/firewall/

FREESCO
- A small free firewall router intended as a replacement for more costly commercial products. The name stands for FREE ciSCO.
- http://www.freesco.org/

Check Point FireWall-1
- ICSA certified Firewall-1. Operates on NT, Solaris, HP-UX, AIX, and RedHat Linux. Integrates with Check Point's VPN Gateway and RealSecure IDS products.
- http://www.checkpoint.com/

Dolphinwall. The Dynamic Firewall
- Installed in two configurations, firewall/central manager and peripheral firewall It includes stateful packet inspection, IDS, HTTP and SMTP proxies and antivirus capability. The firewall runs completely by CD-ROM and a USB pen-drive can be used for back
- http://www.dolphinwall.com/

The netfilter/iptables Project
- Netfilter and iptables are building blocks of a framework inside the Linux 2.4.x and 2.6.x kernel that enables packet filtering, network addresss [and port] translation (NA[P]T) and other packet mangling. This enable use as a firewall and router.
- http://www.netfilter.org

TeamF1, Inc. Software
- Provides software solutions in embedded network security and management on embedded OSes such as vxWorks. FireFly for vxWorks product implements a small footprint robust firewall for use in residential gateways and other internet appliances.
- http://www.teamf1.com/

Securepoint Firewall Server
- Securepoint Firewall Server free firewall system. The Securepoint Firewall Server is a high-performance, commercial-grade application designed to offer full protection for network assets.Also offerings in VPN, IDS and other entwork products.
- http://www.securepoint.cc/

Gibraltar Firewall
- Debian/Linux based professional Firewall solution. Includes comfortable Webinterface and IPSec VPN.
- http://www.gibraltar.at/

pf -- Daniel Hartmeier's packet filter
- Pf is a modern packet filter with NAT capabilities. It is used in OpenBSD.
- http://www.benzedrine.cx/pf.html

Neuberger & Hughes Easygate
- EasyGate can serve as a complete internet solution with a built-in firewall, mailserver, webserver, proxyserver, nameserver, PPTP for teleworking and IPsec for encrypted network linking. The product also comes solely as a firewall and VPN solution, withou
- http://www.easygate.net/EasyGate/Home

Astaro: Integrated Perimiter Security Software
- Astaro supplies integrated perimeter security software solutions that include firewall, VPN, virus, surf and spam.
- http://www.astaro.com/

BizGuardian firewall
- 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.
- http://www.bizguardian.com/

LinuxMagic VPN Firewall
- 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.
- http://www.linuxmagic.com/vpn/index.html

Clavister security Products
- Offers both software and appliance format firewall and VPN solutions as well as support and training..
- http://www.clavister.com/

Simple OpenBSD Firewall Interface
- complete firewall solution for OpenBSD with many features, all of which are accessible through a web interface.
- http://sofi-firewall.sourceforge.net/

Phion Information Technologies
- Security gateways designed to set new standards in security, connectivity and management flexibility in the enterprise security market. Netfence systems are not just security gateways but intelligent traffic managers providing exceptional connection intel
- http://www.phion.com

Gateway Guardian
- OEM Software and hardware for creating firewall and VPN appliances by Merilus. Includes a profile, product range, software downloads, and technical support.
- http://www.netmaster.com/

Livermore Software Laboratores, Intl.
- Providing the PORTUS products for over ten years with a perfect security record. Offers Gigabyte+ levels of performance, and is scalable from the smallest business to worldwide organizations.
- http://www.lsli.com/

Smoothwall Limited
- Corporate server, a linux based, stateful inspection software firewall. Plugin modules available to add VPN and web filtering functions. Customer case studies and option to buy online.
- http://www.smoothwall.net

Novell BorderManager
- ICSA certified firewall for Novell networks. Directory-based user access to intranet and Internet content.
- http://www.novell.com/products/bordermanager/

PortsLock
- Firewall that offers user-level access controls for Windows NT/2000/XP and Windows 2003 Server. It integrates with the Windows user authentication system.
- http://www.portslock.com/

Kerio Technologies UK Ltd.
- Personal and corporate firewalls and secure mailserver solutions. Product details, customer references and on-line store.
- http://www.kerio.co.uk/

InnerTek Software
- Creators of the fBuilder firewall configuration utility for Linux. Includes services, product range, client intranet, screenshots, a profile, and forums.
- http://www.innertek.com/

Trustix AS
- Developers of the XSentry firewall and Trustix Secure Linux. Security science and research.
- http://www.trustix.com/

Secure Computing
- ICSA certified SecureZone and Sidewinder firewalls and application gateways. Embedded VPN capability. Integrates with Strikeback IDS product.
- http://www.securecomputing.com/

Aker Security Solutions
- Aker Firewall, a stateful packet filtering firewall for linux and FreeBSD. Integrages with Acker's Crypt server and client for VPN connections.
- http://www.aker.com.br/

DoorStop
- Macintosh based server-level and personal-user level software firewall, providing IP address based protection for TCP-based services.
- http://www.opendoor.com/doorstop/

IP Filter
- Free Linux TCP/IP packet filter, suitable for use in a firewall environment. Presently incorporated in FreeBSD, OpenBSD and NetBSD.
- http://cheops.anu.edu.au/~avalon/

SINUS Firewall Page
- Free TCP/IP packet filtering firewall for Linux. IP, TCP, UDP, ICMP and IGMP packet filtering. Dynamic rules including time-outs. Graphical management interface.
- http://www.ifi.unizh.ch/ikm/SINUS/firewall/

Winproxy by Ositis Software
- Network Address Translation, firewall, and modem sharing. Runs on Windows NT/95/98. Recently purchased by Blue Coat.
- http://www.winproxy.com

NetBSD/i386 Firewall Project
- Free firewall solution for people with a permanent Internet connection (e.g., xDSL or cable modem). Packet filtering firewall and NAT based on NetBSD.
- http://www.dubbele.com/