Cisco introduced IOS Zone-Based Firewalling (ZFW) in Cisco IOS 12.4(6)T. Cisco announced that their strategic direction for IOS firewalling is going to be with Zone-Based Firewalling. They will continue to support Classic…
Tag: IOS Security
How to Configure the IOS Classic Firewall
The Cisco IOS Classic Firewall implements stateful inspection of traffic flow through the router. The router intercepts packets that it has been configured to intercept, and tracks the state of the packets…
How to configure reflexive access lists
This post describes how to configure reflexive access lists on your router. Reflexive access lists provide the ability to filter network traffic at a router, based on IP upper-layer protocol "session" information….