Hairpin nat for a test environment

  • Hi Guys,

    Currently trying to setup a test system and am struggling to make it work

    We have 2 asterisk servers behind the firewall. In order to simulate a production environment, we want them to communicate over the eternal ip's.

    Tried port forwarding and 1:1 NAT but no traffic. Turned on pure nat, also no joy.

    I suspect that this is a hairpin NAT problem in that we want the traffic to go out via the wan interface, then back in to the other server. (both have virtual external IP's)

    Any pointers?


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