Need help with nonat

Discussion in 'Cisco' started by evolution.of.rod@gmail.com, Nov 14, 2005.

  1. Guest

    I have a network that will be doing PAT on the pix to get to the
    internet. The internal addresses are controlled by our network, so I
    want to route the internal block away from PAT when they are accessing
    our VOIP system and not the internet. VOIP will not work through NAT in
    this scenario...so I need it to bypass NAT altogether and just access
    172.16.100.1/24 directly.

    right now

    ip address 64.x.x.x 255.255.255.252
    ip address inside 172.16.1.1 255.255.255.0
    global (outside) 1 interface
    nat (inside) 1 0.0.0.0 0.0.0.0 0 0
    route outside 0.0.0.0 0.0.0.0 64.x.x.x 1

    This allows all traffic internall to be PATd to 64.x.x.x and go out to
    the internet.
    Let's say the VoIP server is on the 172.16.100.1/24 network.

    How can I get all traffic from 172.16.1.1.24 to go direct to
    172.16.100.1/24 without being NATd. Just direct access?

    Any help would be greatly appreciated.
    , Nov 14, 2005
    #1
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  2. In article <>,
    <> wrote:
    [PIX]

    ;VOIP will not work through NAT in
    ;this scenario...so I need it to bypass NAT altogether and just access
    ;172.16.100.1/24 directly.

    >How can I get all traffic from 172.16.1.1.24 to go direct to
    >172.16.100.1/24 without being NATd.


    access-list voip_nonat_acl permit ip 172.16.1.0 255.255.255.0 172.16.100.0 255.255.255.0
    nat (inside) 0 access-list voip_nonat_acl
    --
    Is there any thing whereof it may be said, See, this is new? It hath
    been already of old time, which was before us. -- Ecclesiastes
    Walter Roberson, Nov 14, 2005
    #2
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