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ESP and AH transform-set command

Posted on 2006-11-15
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Last Modified: 2007-12-19
When I do a crypto ipsec transform-set ?
I see:

ah-md5-hmac
ah-sha-hmac
comp-lzs
esp-des
esp-md5-hmac
esp-null
esp-sha-hmac

I always choose esp-des.
When's the proper time to choose ESP and when's the proper time to choose AH?

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Question by:dissolved
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JFrederick29 earned 2000 total points
ID: 17949956
You can use AH alone when you are just looking for authentication and anti-replay services without encryption.  If you want encryption you need to use ESP.  ESP also provides authentication.  Typically you are going to use ESP for your VPN tunnel.
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