How i do PAT on asa for Internet use on DMZ AND Inside Zone

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Feb 2nd, 2010
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I have ASA 5540 with 8.0 , I want to give internet access on my some DMZ network system so what i do for it? If i do pat then what kind of PAT i do ?

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alex.dersch Tue, 02/02/2010 - 04:50
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Hello Mate,

what you want to do exactely? Permit access from the hosts in the DMZ to the internet or access from the Internet to hosts in the DMZ?



alex.dersch Tue, 02/02/2010 - 05:14
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Why you wanna use PAT instead of NAT?

Do the Hosts on the DMZ have RFC 1918 addressen or public adresses?

if you use RFC 1918 addresses you should create a NAT pool for the outside interface and let the hosts use the nat pool for outbound access.

global (outside) 1 interface

nat (dmz) 1

If you use public addresses you should use NAT exempt rules.

access-list dmz_nat0_outbound extended permit ip [IP Range of DMZ Zone] [Netmask of DMZ Zone] any

nat (dmz) 0 access-list dmz_nat0_outbound




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