http://www.digital.com Altavista Firewall 97
http://www.baynetworks.com BaySecure Firewall-1
http://www.cisco.com Centri Firewall
http://www.compaq.com Compaq ProSignia 200 Firewall Server
http://www.cyberguard.com Cyberguard Firewall
http://www.digitivity.com Digitivity CAGE
http://www.elronsoftware.com Elron Firewall
http://www.ibm.com eNetwork Firewall
http://www.checkpoint.com Firewall-1
http://www.tis.com Gauntlet Internet Firewall
http://www.gta.com GFX Internet Firewall System
http://www.gnatbox.com GNAT Box Firewall
http://www.ntguard.com Guardian 3.0 Firewall for NT v3.0
http://www.tlogic.com nterceptor Firewall Appliance
http://www.microsoft.com Microsoft Proxy Server v2.0
http://www.netscreen.com Netscreen-10, Netscreen-100
http://www.norman.com Norman Firewall
http://www.timestep.com Permit/Gate Firewall
http://www.cisco.com PIX Firewall
http://www.axent.com Raptor Firewall
http://www.securecomputing.com Secure Computing Firewall for NT 3.0.1
http://www.ascend.com SecureConnect
http://www.milkyway.com SecurIT Firewall
http://www.abirnet.com SessionWall-3
http://www.sun.com Sun Screen EFS 2.0
http://www.watchguard.com WatchGuard Security System


The regulars:
www.tinysoftware.com
www.zonelabs.com
www.neoworx.com -my personal choice.

Do what you will but remember choose the one that suits you not the most popular firewall.