> What is the difference between the various levels of Firewalls. > My current requirement is comparing a (router-based) level 3 firewall to a > (PIX) level 7 firewall. Can anyone explain the differences?
The different layers being discussed are the from the OSI networking model. So, a layer 7 firewall would be an application layer firewall (e.g., a proxy) while a layer 3 firewall would be network layer (e.g., packet filtering). -G_E
