SIP Coned NAT - Assistance



  • Hello - I have been trying to get this working however, I ran into a few problems. After researching it appears that there is an issue with Conned NAT and SIP.

    My current setup ->

    DSL (pppOE) pfSense -> Switch -> ATA(voip)

    I read you must utilize advanced NAT however I'm not really sure how to set this up. My WAN interface is always going to get a dynamic IP so should I be setting up a virtual IP and selecting WAN putting in a dummy IP?

    any help would be fantastic at this point as I'm not really sure how to proceed?



  • http://doc.pfsense.org/index.php/Static_Port

    However for SIP there are already predefined rules which are active per default.
    Are you running on a nonstandard port?



  • Yep I spoke to my ISP my ATA needs the following forwarded

    5060-5082

    and 20000 to 20011 which I have done, I changed the outbound nat to advanced and enabled Static Mapping still no successful sip registration



  • Did you actually forward these ports?
    Just enabling static ports is not enough.



  • Yep ports have been forwarded, and nat rules have been created. voip company offered little help I attached some screenshots if anyone see's anything I might be missing?










  • Strange….
    Looking at your screenshot i would say everything is in order and it should work.

    What voip provider are you using?



  • cia.com it's through my ISP

    strange thing is I connect it directly to my modem and the voip works fine. I ran a packet capture it seems like its failing to register



  • How exactly do the frames coming from the pfSense differ in comparison to the frames sent when connected directly to the modem?


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