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    SIP Not Working Behind Pfsense

    Scheduled Pinned Locked Moved Firewalling
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    • DerelictD
      Derelict LAYER 8 Netgate @Janiboy
      last edited by Derelict

      @janiboy What does the SIP provider advise? Whatever NAT is configured in the Cisco should be able to be duplicated in pfSense but it would be far easier to know what those rules need to do. There is no "SIP." Every implementation is different especially where NAT requirements are concerned.

      Chattanooga, Tennessee, USA
      A comprehensive network diagram is worth 10,000 words and 15 conference calls.
      DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
      Do Not Chat For Help! NO_WAN_EGRESS(TM)

      bingo600B 1 Reply Last reply Reply Quote 1
      • bingo600B
        bingo600 @Derelict
        last edited by bingo600

        @derelict

        The ASA (PIX) has "Inspect SIP" as default ==> SIP ALG

        The Cisco Modem might have the same stuff (ALG)
        Prob. rewriting the outbound sip packets source ip from RFC1818 to the "Outside/Public IP"

        /Bingo

        If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

        pfSense+ 23.05.1 (ZFS)

        QOTOM-Q355G4 Quad Lan.
        CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
        LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

        DerelictD 1 Reply Last reply Reply Quote 1
        • DerelictD
          Derelict LAYER 8 Netgate @bingo600
          last edited by

          @bingo600 Yeah, that's why I asked for the config of the cisco and the advice from the SIP provider. They should know every last detail about what NAT, etc needs to happen (ROFL). The advice these days seems to be mostly, "be sure to disable any any SIP ALGs."

          Chattanooga, Tennessee, USA
          A comprehensive network diagram is worth 10,000 words and 15 conference calls.
          DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
          Do Not Chat For Help! NO_WAN_EGRESS(TM)

          J 2 Replies Last reply Reply Quote 1
          • J
            Janiboy
            last edited by

            Thanks for the replies,

            Sorry the provider wont give any details, because they don't want to loss their profit on the cisco router because every month we are billed.

            i only have the IP on that cisco firewall.
            IG0 - 10.200.94.182 /30 going to their modem
            IG1 - 192.168.1.1/24

            but i will try ask them again if they can provide it thanks.

            1 Reply Last reply Reply Quote 0
            • J
              Janiboy @Derelict
              last edited by

              @derelict @bingo600 i will get back to you guys once i have an update on our ISP side. Thanks

              1 Reply Last reply Reply Quote 0
              • chpalmerC
                chpalmer @Janiboy
                last edited by

                @janiboy said in SIP Not Working Behind Pfsense:

                but i dont know how to Set static mapping in Pfsense .

                I have several pfSense implementations with VOIP phones and other SIP devices behind. Generally these days most VOIP providers do not need static port but there are one or two that do.

                https://docs.netgate.com/pfsense/en/latest/nat/outbound.html#static-port

                Triggering snowflakes one by one..
                Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                J 1 Reply Last reply Reply Quote 1
                • J
                  Janiboy @chpalmer
                  last edited by

                  @chpalmer said in SIP Not Working Behind Pfsense:

                  https://docs.netgate.com/pfsense/en/latest/nat/outbound.html#static-port

                  Thanks for the reply sir,

                  Is there any video or image that I can walk through this process, sorry because im new to it.

                  chpalmerC 1 Reply Last reply Reply Quote 0
                  • chpalmerC
                    chpalmer @Janiboy
                    last edited by

                    @janiboy

                    Go to /firewall_nat_out.php ( http://"yourfirewall"/firewall_nat_out.php )

                    or another way to describe..

                    Firewall / NAT / Outbound

                    ... Ill get a screen capture momentarily..

                    Triggering snowflakes one by one..
                    Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                    chpalmerC 1 Reply Last reply Reply Quote 1
                    • chpalmerC
                      chpalmer @chpalmer
                      last edited by

                      Go down to mappings and then "add"..

                      Triggering snowflakes one by one..
                      Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                      chpalmerC 1 Reply Last reply Reply Quote 1
                      • chpalmerC
                        chpalmer @chpalmer
                        last edited by

                        The local address shown would be my SIP device/client machine. If it is a machine doing multiple tasks then adding the SIP port would be prudent.

                        staticport.jpg

                        Triggering snowflakes one by one..
                        Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                        chpalmerC 1 Reply Last reply Reply Quote 1
                        • chpalmerC
                          chpalmer @chpalmer
                          last edited by

                          "Outbound NAT Mode" then should be "Hybrid".

                          Triggering snowflakes one by one..
                          Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                          J 1 Reply Last reply Reply Quote 1
                          • J
                            Janiboy @chpalmer
                            last edited by

                            @chpalmerscreencapture-210-4-100-242-11443-firewall-nat-out-edit-php-2021-03-24-11_19_54.png

                            i got this on my side, my panasonic NS300 ip 192.168.1.102 , my WAN is 10.200.94.182.

                            witch ip should i put on the source?

                            thanks

                            chpalmerC bingo600B 2 Replies Last reply Reply Quote 0
                            • chpalmerC
                              chpalmer @Janiboy
                              last edited by

                              @janiboy said in SIP Not Working Behind Pfsense:

                              my panasonic NS300 ip 192.168.1.102 , my WAN is 10.200.94.182.

                              witch ip should i put on the source?

                              "SIP device/client machine."

                              The LAN device at 192.168.1.102

                              Triggering snowflakes one by one..
                              Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                              J 1 Reply Last reply Reply Quote 1
                              • J
                                Janiboy @chpalmer
                                last edited by

                                @chpalmer no need to add anything ? ok i will give it a try and get back to you thanks @chpalmer

                                chpalmerC 1 Reply Last reply Reply Quote 0
                                • J
                                  Janiboy @Derelict
                                  last edited by

                                  @derelict Talked to SIP provider, They know about the config maybe non technical person, by the way sip cisco router model is Cisco 4321.

                                  1 Reply Last reply Reply Quote 0
                                  • chpalmerC
                                    chpalmer @Janiboy
                                    last edited by

                                    @janiboy said in SIP Not Working Behind Pfsense:

                                    no need to add anything ?

                                    ???

                                    The LAN device at 192.168.1.102

                                    You need to add your client device as the "source".

                                    Triggering snowflakes one by one..
                                    Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                                    1 Reply Last reply Reply Quote 0
                                    • bingo600B
                                      bingo600 @Janiboy
                                      last edited by

                                      @janiboy said in SIP Not Working Behind Pfsense:

                                      i got this on my side, my panasonic NS300 ip 192.168.1.102 , my WAN is 10.200.94.182.

                                      Please note that even if your "Wan is 10.200.94.182" , that is not your public ip address (aka the ip address you are seen with on the internet).

                                      Somewhere between your "Wan" and the internet someone is Natting your 10.200.94.182 , to a non RFC1918 ip address.

                                      You could (from a browser behind your WAN) , go to this site : https://www.myip.com/

                                      And it will show what IP you currently are seen as on the internet.

                                      That would also be the ip address that external sip devices (phones/servers) should reply to.

                                      /Bingo

                                      If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

                                      pfSense+ 23.05.1 (ZFS)

                                      QOTOM-Q355G4 Quad Lan.
                                      CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
                                      LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

                                      1 Reply Last reply Reply Quote 0
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