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Deprecated global & nat commands on ASA

Posted on 2010-11-15
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Last Modified: 2012-05-10
I am putting a new Cisco ASA 5510 in place to upgrade a site from small Cisco ASA-5505 firewall.  I am extremely familiar with the older versions of Cisco's IOS software, but ran into a deprecated command that I need translated.

Here is the old commands under teh ASA-5505:

global (outside) 1 interface
nat (inside) 0 access-list VPN
nat (inside) 1 0.0.0.0 0.0.0.0

But these commands do NOT work, and are deprecated under the IOS ver 8.3 on my new ASA-5510.

Can anyone tell me what the new commands are for this?  It mentions using the "nat" command, but I do not know the syntax.  (Also, are that any EASY TO FOLLOW, documents on what commands have been deprecated from one IOS version to the other, and what those new commands are that provide the same functions?)

Thank you for all help in advance,
Jeff
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Question by:jgrammer42
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Jimmy Larsson, CISSP, CEH earned 2000 total points
ID: 34138967
Hi

This document explains everything, it should be your friend:
http://www.cisco.com/en/US/docs/security/asa/asa83/upgrading/migrating.html

In the end of this document you have plenty of nat-examples (including your commands above) that explains how the same thing will be configured in 8.3.

Another solution if you are familiar to "old" asa-commands is to configure exactly what you want to achieve on the firewall first when running 8.2 code, and then upgrade to 8.3. The upgrade script will do all configuration changes for you and comparing the old config with the new is a very teaching lesson if you want to understand 8.3 nat.

Simply: The global command is gone. the nat-command is still there but the syntax is totally different. You can configura nat either on network objects (simple nat) or using the way more complex nat command.

But again, best thing is to read and understand the migration document mentioned above.

Best regards
Kvistofta
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Author Comment

by:jgrammer42
ID: 34139398
Thank you very much Kvistofta!

I appreciate it.
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Author Closing Comment

by:jgrammer42
ID: 34139409
Exact answer needed.  Thank you,
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