Outbound data from an internal server to use a virtual IP



  • I have 5 IP Addresses. General data goes out over the WAN address, but I have 4 other VIPs. I have an exchange server that I want to specifically go out a specific virtual IP. Very hard to find some concrete info on that. I'm using 2.3.4.


  • LAYER 8 Netgate

    Lots of information all over the place for it.

    Firewall > NAT, Outbound tab

    Set Hybrid mode

    Make a WAN entry for that source address (and maybe specific destination ports) and set the VIP as the NAT address.



  • Usually my google-fu is strong, but I really only found one relevant post.

    What confused me was the "Network" so you have to make it /32 and you can't pick an alias which makes two places I need to make changes when they upgrade to exchange 2016.

    Just annoying.


  • LAYER 8 Netgate

    You can use an alias there.

    Source: Network: Type an alias name

    It is admittedly not as clear as it could be.


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