What are some commercial products or consultants who sell/service firewalls?
We feel this topic is too sensitive to address in a FAQ, however, an independently maintained list (no warranty or recommendations are implied) can be found at URL: http://www.access.digex.net/~bdboyle/firewall.vendor.html Glossary of firewall related terms Abuse of Privilege: When a user performs an action that they should not have, according to organizational policy or law. Access Control Lists: Rules for packet filters (typically routers) that define which packets to pass and which to block. Access Router: A router that connects your network to the external Internet. Typically, this is your first line of defense against attackers from the outside Internet. By enabling access control lists on this router, you’ll be able to provide a level of protection for all of the hosts “behind” that router, effectively making that network a DMZ instead of an unprotected external LAN. Application-Level Firewall: A firewall system in which service is provided by processes that maintain complete TCP