ESP and AH

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Nov 28th, 2007
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We have two different security mechanisms - ESP and AH. ESP provides Authentication,Intigrity and Encryption while AH provides Authentication and Intogrity only. Why do we need to use both mechanisms combinly in a tunnel? Why dont we use ESP alone or AH alone? Please correct me if I am wrong.

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mohammed.ayubi Wed, 11/28/2007 - 07:26
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We can establish tunnel with ESP or AH alone,it is not required to use both, the only reason you would like to use both for tunnel is to have additional security .


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