[c-nsp] PIX order of operations

Peder at NetworkOblivion peder at networkoblivion.com
Wed Oct 26 22:15:01 EDT 2005


Depends on the direction and type of traffic.

Assuming a NAT from inside to outside and an access-list on the inside 
interface: the acl comes first and then the nat.

Same asumptions as above but using a vpn tunnel as well:  inside acl, 
nat, vpn acl.

Assuming a NAT from inside to outside and an access-list on the outside 
interface for inbound traffic from the net:  outside acl and then (de)NAT.


Voll, Scott wrote:
> Can someone remind me what comes first NAT or ACL when it comes to order
> of operations on a PIX.
> 
> TIA
> 
> Scott
> 
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> 

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