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    Voip : Only one way speech is working between 2 Sites!

    Scheduled Pinned Locked Moved Firewalling
    28 Posts 6 Posters 9.5k Views
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    • pttP
      ptt Rebel Alliance
      last edited by

      Diagnostics –> Packet Capture

      Do a "call capture" then open with Wireshark ( Telephony -> VoIP Calls -> Flow ) and check where the RTPs Come & Go, then you can figure what is happening.

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      • F
        fifinon
        last edited by

        i created  this rules but no résult

        source (ports)  => destination (ports)

        adresse PBX site A : 172.16.1.200 (UDP 32000-32512 ) => adresse PBX Site B 172.16.2.200 (UDP 32000-32512)

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        • marcellocM
          marcelloc
          last edited by

          Create one with serverA => serverB and serverB => serverA.

          Free all traffic between voip servers.

          Treinamentos de Elite: http://sys-squad.com

          Help a community developer! ;D

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          • F
            fifinon
            last edited by

            @marcelloc:

            Create one with serverA => serverB and serverB => serverA.

            Free all traffic between voip servers.

            i did it !! no résult >:(

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            • F
              fifinon
              last edited by

              I think the problème is in the NAT !! because when i turn off NAT filtre in advance setup the voip work very good, but the navigation in internet don't work (no internet acces) so i don't know how to give acces to internet !!! do you have any idea ????

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              • marcellocM
                marcelloc
                last edited by

                The server is on the same subnet as machines?

                If so, disable automatic nat and create your own nat out rules.

                Ps.
                It sounds strange to me that some services will need nat and some don't.

                Treinamentos de Elite: http://sys-squad.com

                Help a community developer! ;D

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                • F
                  fifinon
                  last edited by

                  @marcelloc:

                  The server is on the same subnet as machines?

                  If so, disable automatic nat and create your own nat out rules.

                  Ps.
                  It sounds strange to me that some services will need nat and some don't.

                  Yes the server is on the same subnet as machnies !

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                  • F
                    fifinon
                    last edited by

                    I really don't understand this problème!!!
                    i tired every thing to resolve it but no solution until now!!

                    now i'm trying to make the VOIP work just between 2 sites but the firewall still block the voip!

                    the ping between 2 sites A and B is good also the transfer of DATA from A => B and B => A!

                    Site A :172.16.1.0
                    ALCATEL PBX A : 172.16.1.200
                    Site B :172.16.2.0
                    ALCATEL PBX B : 172.16.2.200

                    i created those rules,

                    in Server A :

                    Rule 1 :

                    Lan Interface :

                    Action : Pass

                    Interface : LAN

                    Protocol : Any

                    Source  : Lan subnet

                    Destination : Single Hoste Or Aliace (Site B)

                    Geteway : default

                    Rule 2 :

                    Lan Interface :

                    Action : Pass

                    Interface : LAN

                    Protocol : TCP/UDP

                    Source  : Single Hoste Or Aliace (172.16.1.200)

                    Port : from 32000 to 32512

                    Destination : Single Hoste Or Aliace (172.16.2.200)

                    Port : from 32000 to 32512

                    Geteway : default

                    –-----------------------------------------------------------

                    in Server B :

                    Rule 1 :

                    Lan Interface :

                    Action : Pass

                    Interface : LAN

                    Protocol : Any

                    Source  : Lan subnet

                    Destination : Single Hoste Or Aliace (172.16.1.0)

                    Geteway : default

                    Rule 2 :

                    Lan Interface :

                    Action : Pass

                    Interface : LAN

                    Protocol : TCP/UDP

                    Source  : Single Hoste Or Aliace (172.16.2.200)

                    Port : from 32000 to 32512

                    Destination : Single Hoste Or Aliace (172.16.1.200)

                    Port : from 32000 to 32512

                    Geteway : default

                    –------------------------------------------------------------

                    Alcatel support say that the VOIP need just port from 32000 to 32512 but i also tried to autorise all port!! but no résult!

                    in Diagnostics: System logs: Firewall : the firewall still block the voip !!!

                    Act       Time         If            Source                Destination              Proto
                    X Oct 2 15:32:01 LAN 172.16.1.200:4489 172.16.2.200:58615 UDP
                    X Oct 2 15:31:59 LAN 172.16.1.200:4491 172.16.2.200:34195 UDP


                    Do you have any idea? ???

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                    • marcellocM
                      marcelloc
                      last edited by

                      Have you disabled nat between sites?

                      Use tcpdump at console and see packages flowing

                      Treinamentos de Elite: http://sys-squad.com

                      Help a community developer! ;D

                      1 Reply Last reply Reply Quote 0
                      • F
                        fifinon
                        last edited by

                        I turned off the NAT in advance setup, it work good ! but users can't have the internet navigation!!

                        how can i block the nat just between the 2 sites ???

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                        • M
                          Metu69salemi
                          last edited by

                          With manual outbound nat, there is two ways to do it.
                          either you have rules to these networks with a check box: DO NOt NAT and after that destination any network with normal natting

                          -or-

                          almost similar, but any other destinations has to have nat rule except these 2sites.

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                          • C
                            cmb
                            last edited by

                            It's probably not NATing between the sites, it wouldn't by default at least, you would have to setup manual outbound NAT for that.

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