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NAT based on destination

Posted on 2013-12-12
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Last Modified: 2013-12-13
I have a partner web site that seems to not cope with with multiple users coming to it from our same source PAT public IP address.  It there a way to tell the ASA to use a specific NAT pool if they are trying to go to a particular address?
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Question by:amigan_99
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Expert Comment

by:Jody Lemoine
ID: 39717429
Usually a static NAT entry is used in this scenario. Static NAT is bidirectional and will supersede your overloaded NAT for traffic to/from the addresses in question.
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Jody Lemoine earned 2000 total points
ID: 39717514
Sorry. Misread.

If you want to change pools based on destination, you can do it like this:

access-list acl-pool-1 permit ip any x.x.x.x y.y.y.y
access-list acl-pool-default permit ip any any

nat (inside) 1 access-list acl-pool-1
nat (inside) 10 access-list acl-pool-default
global (outside) 1 a.a.a.a  m.m.m.m
global (outside) 10 a.a.a.b  m.m.m.m

If you define your destination in acl-pool-1, it will use pool 1 and everything else will use pool 10.
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Author Closing Comment

by:amigan_99
ID: 39718271
This is great.  I am dealing with a dinosaur government agency whom is not dealing with multiple clients coming from a single PAT.  Arrgh.  :-)
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