M0n0wall
A free embedded firewall software package based on FreeBSD.
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 inmune to intrusions and power failures.
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.
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.
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 are also available.
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, without any extras.
Novell BorderManager
ICSA certified firewall for Novell networks. Directory-based user access to intranet and Internet content.
Open Source Firewall for Windows
First open source firewall for windows. Includes binaries and sources code. For Windows 2000 and later.
pf -- Daniel Hartmeier's packet filter
Pf is a modern packet filter with NAT capabilities. It is used in OpenBSD.
pfSense
A free firewall based on Packet Filter (pf) and FreeBSD 6.
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 intelligence.
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.
Projectfiles Firewall
Security resource and firewall software for Linux systems. Essays on security, forum, news and software support. (Bash) [Linux]
Secure Computing
ICSA certified SecureZone and Sidewinder firewalls and application gateways. Embedded VPN capability. Integrates with Strikeback IDS product.
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.
Security Designers
Creators of distributed firewalls and providing related support services.
Simple OpenBSD Firewall Interface
complete firewall solution for OpenBSD with many features, all of which are accessible through a web interface.
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.
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.
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.
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