New to Cisco PIX/ ASA

["Keith A. Glass" <salgak () speakeasy net>]

I've managed Gauntlets, Checkpoints, Netscreens, and SonicWalls in the past.

 

I'm a bit confused with the in and outs of the ASA firewalls.

 

I'm setting up at HA pair, my Eth0/0 is my interior interface, trust level
100, Eth 0/1 and 0/2 are my IP and State heatbeats, and Eth 1/0 is my
external interface, trust level 1.

 

Am I correct in my understanding that if I want two-way traffic, traffic is
not blocked to a lower trust level, so I need only write a rule to pass the
traffic between the endpoints from the external interface to the internal
interface, and the reply traffic is taken care of ??  Or do I have to write
a reverse rule, from the internal interface to the external as well ???

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