Question: The IPsec architecture document states that when two transport mode SAs are bundled to allow both AH and ESP protocols on the same end-to-end flow,

The IPsec architecture document states that when two transport mode SAs are bundled to allow both AH and ESP protocols on the same end-to-end flow, only one
ordering of security protocols seems appropriate: performing the ESP protocol
before performing the AH protocol. Why is this approach recommended rather than
authentication before encryption?

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When using IPsec to secure communications both the Authentication Header AH and Encapsulating Security Payload ESP can be used together to provide dif... View full answer

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