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  • 1.  Source-NAT

    Posted 05-26-2017 07:04

    Why source-NAT evaluation occur after route look-up ??? 

  • 2.  RE: Source-NAT
    Best Answer

    Posted 05-26-2017 07:50

    Hi !


    Just to save CPU cycles, as it makes no sense to do a source NAT when the destination is not reachable or the security policy is not permitting the traffic.

    To anticipate your next question: destination NAT has to be done before, otherwise you cannot do a lookup of the destination