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Thread: 1-1 nat

  1. #1
    Newbie
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    May 2016
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    14

    Default 1-1 nat

    Something I am not sure I understand/ or if it can be done.

    We will have 2 wan connections from different ISP's. Lets say I host a web server and I do a 1-1 NAT on WAN_A with an ip from ISP_A. In the event of a failover I would want another 1-1 NAT on WAN_B with an ip from ISP_B so that the web server can still function.

    Is this possible? I saw an older forum post that said something along the lines that it will just match the first NAT and never see the other NAT rule even in the event of a failover.

    Thanks!
    -Mike

  2. #2
    Untangle Junkie dmorris's Avatar
    Join Date
    Nov 2006
    Location
    San Carlos, CA
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    17,747

    Default

    Yes,
    Just add nat rules

    if source address == whatever and destination interface == Y then nat to address yy.yy.yy.yy
    if source address == whatever and destination interface == Z then nat to address zz.zz.zz.zz

    same for port forwards to handle inbound

    that other post sounds incorrect. the rules will evaluate the same regardless of what wan failover thinks about the state of the connection.
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  3. #3
    Newbie
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    May 2016
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    Default

    Thank you! You all rock!

  4. #4
    Untangle Junkie dmorris's Avatar
    Join Date
    Nov 2006
    Location
    San Carlos, CA
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    17,747

    Default

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