Outbound NAT stops mapping correctly

  • PFsense: 1.2.3-RELEASE built on Sun Dec 6 23:21:36 EST 2009          3 WAN's / 2 LAN's

    Everything works fine and then without any errors that I we can find the outbound 1:1 NAT stops working correctly and everything starts going out on the default interface IP.  Which creates a problem because this is a mail server and it needs to be on this IP.

    Example: 1:1 NAT set:  24.x.x.24/32 to  // Outbound NAT Tab=automatic / No port forwards
    virtual IP's are defined etc

    On the machine if we go to URL:  www.whatismyip.com  it shows 24.x.x.24 correctly and then on a random day without any warning we can goto whatismyip.com and it shows the 24.x.x.18

    If we do nothing but reset the PFsense firewall all works well again for a few days?

    ANY SUGGESTIONS???    Thanks in advance for your time.

  • You could stop using 1:1 NAT.
    Simply forward normally the ports you need and create your own advanced outbound rules for your server.

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