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    RTP / SIP Port Forwarding

    Scheduled Pinned Locked Moved General pfSense Questions
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    • V Offline
      virtualliquid
      last edited by

      I have been struggling with getting some SIP devices to connect to my Avaya sip server sitting behind my PfSense firewall.

      I have found a few guides on how to do this but none seem to do the trick. I can connect the calls but I have no media (no voice) on the call, I can see in the wireshark traces that the RTP data is not going to the correct IP address. However SIP traffic is connecting just fine, I seem to be stuck with the RTP data not going to where it needs to go.

      PfSense Version 2.3.2
      Avaya System Manager 6.3
      Avaya Session Manager 6.3
      Avaya Communications Manager 6.3
      9608g IP phone
      one-x Attendant IP SoftPhone
      Android One-x Communicator (from app store)

      My Avaya server is using UTP ports for RTP 2048 - 7999

      I have configured the following WAN rule.
      Interface: WAN
      Protocol: UDP
      External port range: From: 2048
      External port range: To: 7999
      NAT IP: 10.1.30.172 (my internal sipserver)
      Local Port: 2048
      Description: Avaya RTP Sessions
      Checked auto create rule.

      Interface: WAN
      Protocol: UDP
      External port range: From: 5060
      External port range: To: 5060
      NAT IP: 10.1.30.172 (internal sip server)
      Local Port: 5060
      Description: Avaya SIP 5060
      Checked auto create rule.

      I also installed SIPROXD with the following settings

      Inbound Interface: LAN
      Outbound Interface: WAN
      Enable RTP Proxy: Enable
      RTP Port Range (lower): 2048
      RTP Port Range (upper): 7999
      Outbound Proxy Hostname: My Public IP Address

      I have also tried with and without the NAT manual outbound rule for my voice vlan, as well as Disabling firewall PF scrubbing. None of this has worked so far.

      Any suggestions would be appreciated.

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