In this video I explain how ICMP Traffick (like pings, echo, echo-reply) is handled in the firewall. The ICMP packets are being handled in 3 different ways depending if the traffic is to the box, from the box or thru…
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Cisco ASA firewall and ICMP traffic
Tagged with: access-list, adaptive, add, appliance, ASA, ccna, ccna (field of study), ccnp, Cisco, cisco asa, echo, echo-reply, firewall, fixup protocol icmp, icmp, icmp deny, icmp permit, Modular Policy Framework, mpf, nat, nat0, nat0.net, networking, Ping, security, stateful, tutorial
Posted in Cisco Security, Security
Posted in Cisco Security, Security
Asymmetric routing in ASA – TCP state bypass
Today I continued my work to fully understand MPF (Modular Policy Framework) and found a new cool feature in ASA 8.2: TCP State Bypass. By bypassing TCP state machine for certain traffic you can get around problems with asymettricrouting. In…
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