Network firewalls were created as the primary perimeter defense for most organizations, but since its creation the technology has spawned many iterations: proxy, stateful, Web app, next-generation ...

Like a stateful firewall, a stateful switch holds in memory key attributes of each flow or connection, such as user identity, IP addresses and ports involved in the connection, application and ...

Stateful packet filter firewalls (or stateful inspection firewalls, in the case of FireWall-1) use a different technology. Stateful packet filters get around the performance penalty by using code ...

A firewall technology that ensures that all inbound packets are the result of an outbound request. Also called "stateful packet inspection" (SPI), it was designed to prevent harmful or unrequested ...

So now that the 2.4 Linux kernel offers stateful packet filtering, administrators should revisit the possibility of using Linux for corporate firewalls. What's your experience with Netfilter and ...