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How do I configure PAT/port fowarding on cisco Asa FW

Posted on 2008-10-02
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Last Modified: 2011-09-20
I have a setup on cisco ASA fw with an inside host with private ip, nat'd to global IP on the outside. This host needs to be accessed by 6 diferent outside hosts each on a different tcp port(non-standard ports).
How do I achieve this using translation? Thanks
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Question by:rigour
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4 Comments
 
LVL 26

Accepted Solution

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Soulja earned 750 total points
ID: 22626808
Try this:

Place your ip's in the appropriate places


static (inside,outside) outside_ip inside_ip netmask 255.255.255.255

access-list OUTSIDE extended permit tcp host HOST1 host inside_host_ip eq port1
access-list OUTSIDE extended permit tcp host HOST2 host inside_host_ip eq port2
access-list OUTSIDE extended permit tcp host HOST3 host inside_host_ip eq port3
access-list OUTSIDE extended permit tcp host HOST4 host inside_host_ip eq port4
access-list OUTSIDE extended permit tcp host HOST5 host inside_host_ip eq port5
access-list OUTSIDE extended permit tcp host HOST6 host inside_host_ip eq port6

access-group OUTSIDE in interface outside
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Author Comment

by:rigour
ID: 22632194
Thanks Soulja, I am currently putting together a design solution for an urgent implementation, so cannot physically test your suggestion straightaway. Logically I believe it will work in the scenario given earlier.

What if the inside host increased to 3 or 4 hosts that need to use the one global address for nat, because of shortage of public address. How could the 6 external hosts access the 3 internal hosts, still on the different ports? Thanks
0
 

Author Comment

by:rigour
ID: 22647891
Thanks Soulja, I am currently putting together a design solution for an urgent implementation, so cannot physically test your suggestion straightaway. Logically I believe it will work in the scenario given earlier.

What if the inside host increased to 3 or 4 hosts that need to use the one global address for nat, because of shortage of public address. How could the 6 external hosts access the 3 internal hosts, still on the different ports? Thanks
0
 
LVL 26

Expert Comment

by:Soulja
ID: 22688686
It would still remain on a per port basis.
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