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Forum Replies

  1. Hi Sims,

    I will, added it to the list.

    Rene

  2. Hi Rene,

    Need help again, So its NAT this time.

    ASA1(config)# object network WEB_SERVER
    ASA1(config-network-object)# host 192.168.1.1
    ASA1(config-network-object)# nat (DMZ,OUTSIDE) static 192.168.2.200

    Let's call this statement A.

    The configuration above tells the ASA that whenever an outside device connects to IP address 192.168.2.200
    that it should be translated to IP address 192.168.1.1.

    ASA1(config)# object network DMZ
    ASA1(config-network-object)# subnet 192.168.1.0 255.255.255.0
    ASA1(config-network-object)# nat (DMZ,OUTSIDE) static PUBLIC_POOL

    Let's call this statement B.

    The configuration above tells the ASA to translate any IP address from the subnet DMZ (192.168.1.0 /24) to an
    IP address in the PUBLIC_POOL (10.10.10.0 /24).

    Both NAT statement`s are similar except one has a IP other has a POOL.

    statement-A is performing translation for the inbound traffic
    statement-B is performing translation for outbound traffic

    My question is what part of command makes ASA to perform translation on INBOUND traffic or OUTBOUND traffic and on which interface.

  3. Thanks Rene . I have sorted out the issue when capturing the packet.Many Thanks

  4. Hi Rene,

    For static NAT, does it matter if the direction of the nat is from low to high or high to low.
    What I mean is say for example:

    nat (inside,outside) static -- 100 to 0
    nat (outside,inside) static -- 0 to 100

    Because to me static nat is bi directional it shouldnt matter which direction traffic is initated. Do you agree or should snat be from High to low in the config?

  5. maher1 says:

    Hi Michael,

    Normally it should work as Rene has previously explained because the direction doesn't matter for the ASA, the only thing that matters is what to translate. If you want that the request is sourced from the inside, you can specify "unidirectional" by end of the command of nat(inside,outside) static so the destination addresses cannot initiate traffic to the source addresses.

    Hope this can help.

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