Keine Verbindung mit VoIP-Providern (port unreachable)

[anonymous]

Hallo,

3cx V9 läuft bei uns hinter Endian Firewall (SIP- und RDP-Channels in beide Richtungen freigegeben bzw. weitergeleitet) und Fritzbox 7390 (VDSL-Router = nutzt Port 5060 selbst). Andere SIP-Telefone in diesem internen Netz (z. B. Gigaset IP-Telefon) funktionieren problemlos mit SIP-Providern.

Wenn ich auf dem 3cx Server (Win 2008R2) testweise das Softphone x-lite installiere, klappt die Verbindung zu diversen VoIP-Providern problemlos. Wenn ich in 3cx (X-Lite beendet) die gleichen SIP-Accounts (z. B. sipgate.de, Port 5070) einrichte, ist keine Verbindung möglich.

Wireshark zeigt an, dass SIP-Paket rausgeht
lokale IP sipgate-IP SIP Request: REGISTER sip:sipgate.deort5070
sipgate-IP lokale IP ICMP destination unreachable (port unreachable)

X-Lite nutzt sehr hohe SIP-Ports (>30.000). Selbst wenn ich den Port bei 3cx fest einstelle (z. B. 62012), der bei X-Lite zuvor noch funktionierte, erhalte ich bei der Nutzung von 3cx wieder das port unreachable im Wireshark bei den Anmeldeversuchen.

Windows-Firewall deaktivieren hatte ich auch schon versucht.

Kennt jemand dieses Phänomen?

 

[anonymous]

In der Fritzbox sind die Freigaben wie in
http: //www.net-point.ch/blog/avm-fritz-box-als-firewall-router-fur-die-3cx-ip-telefonanlage-einrichten/
beschrieben eingetragen.

Fritzbox ist Router (192.168.250.1), die Endian dahinter macht nochmal NAT in das Netz 192.168.1.0.

Der Firewallchecker sagt:
3CX Firewall Checker, v1.0. Copyright (C) 3CX Ltd. All rights reserved.

: Phase 1, checking servers connection, please wait...
: Stun Checker service is reachable. Phase 1 check passed.
: Phase 2a, Check Port Forwarding to UDP SIP port, please wait...
: UDP SIP Port is set to 5062. Response received correctly with no translation. Phase 2a check passed.

: Phase 2b. Check Port Forwarding to TCP SIP port, please wait...
: TCP SIP Port is set to 5062. Response received correctly with no translation. Phase 2b check passed.

: Phase 3. Check Port Forwarding to TCP Tunnel port, please wait...
: TCP TUNNEL Port is set to 5090. Response received correctly with no translation. Phase 3 check passed.

: Phase 4. Check Port Forwarding to RTP external port range, please wait...
: UDP RTP Port 9000. Response received correctly with no translation. Phase 4-01 check passed.
: UDP RTP Port 9001. Response received correctly with no translation. Phase 4-02 check passed.
: UDP RTP Port 9002. Response received correctly with no translation. Phase 4-03 check passed.
: UDP RTP Port 9003. Response received correctly with no translation. Phase 4-04 check passed.
: UDP RTP Port 9004. Response received correctly with no translation. Phase 4-05 check passed.
: UDP RTP Port 9005. Response received correctly with no translation. Phase 4-06 check passed.
: UDP RTP Port 9006. Response received correctly with no translation. Phase 4-07 check passed.
: UDP RTP Port 9007. Response received correctly with no translation. Phase 4-08 check passed.
: UDP RTP Port 9008. Response received correctly with no translation. Phase 4-09 check passed.
: UDP RTP Port 9009. Response received correctly with no translation. Phase 4-10 check passed.
: UDP RTP Port 9010. Response received correctly with no translation. Phase 4-11 check passed.
: UDP RTP Port 9011. Response received correctly with no translation. Phase 4-12 check passed.
: UDP RTP Port 9012. Response received correctly with no translation. Phase 4-13 check passed.
: UDP RTP Port 9013. Response received correctly with no translation. Phase 4-14 check passed.
: UDP RTP Port 9014. Response received correctly with no translation. Phase 4-15 check passed.
: UDP RTP Port 9015. Response received correctly with no translation. Phase 4-16 check passed.
: UDP RTP Port 9016. Response received correctly with no translation. Phase 4-17 check passed.
: UDP RTP Port 9017. Response received correctly with no translation. Phase 4-18 check passed.
: UDP RTP Port 9018. Response received correctly with no translation. Phase 4-19 check passed.
: UDP RTP Port 9019. Response received correctly with no translation. Phase 4-20 check passed.
: UDP RTP Port 9020. Response received correctly with no translation. Phase 4-21 check passed.
: UDP RTP Port 9021. Response received correctly with no translation. Phase 4-22 check passed.
: UDP RTP Port 9022. Response received correctly with no translation. Phase 4-23 check passed.
: UDP RTP Port 9023. Response received correctly with no translation. Phase 4-24 check passed.
: UDP RTP Port 9024. Response received correctly with no translation. Phase 4-25 check passed.
: UDP RTP Port 9025. Response received correctly with no translation. Phase 4-26 check passed.
: UDP RTP Port 9026. Response received correctly with no translation. Phase 4-27 check passed.
: UDP RTP Port 9027. Response received correctly with no translation. Phase 4-28 check passed.
: UDP RTP Port 9028. Response received correctly with no translation. Phase 4-29 check passed.
: UDP RTP Port 9029. Response received correctly with no translation. Phase 4-30 check passed.
: UDP RTP Port 9030. Response received correctly with no translation. Phase 4-31 check passed.
: UDP RTP Port 9031. Response received correctly with no translation. Phase 4-32 check passed.
: UDP RTP Port 9032. Response received correctly with no translation. Phase 4-33 check passed.
: UDP RTP Port 9033. Response received correctly with no translation. Phase 4-34 check passed.
: UDP RTP Port 9034. Response received correctly with no translation. Phase 4-35 check passed.
: UDP RTP Port 9035. Response received correctly with no translation. Phase 4-36 check passed.
: UDP RTP Port 9036. Response received correctly with no translation. Phase 4-37 check passed.
: UDP RTP Port 9037. Response received correctly with no translation. Phase 4-38 check passed.
: UDP RTP Port 9038. Response received correctly with no translation. Phase 4-39 check passed.
: UDP RTP Port 9039. Response received correctly with no translation. Phase 4-40 check passed.
: UDP RTP Port 9040. Response received correctly with no translation. Phase 4-41 check passed.
: UDP RTP Port 9041. Response received correctly with no translation. Phase 4-42 check passed.
: UDP RTP Port 9042. Response received correctly with no translation. Phase 4-43 check passed.
: UDP RTP Port 9043. Response received correctly with no translation. Phase 4-44 check passed.
: UDP RTP Port 9044. Response received correctly with no translation. Phase 4-45 check passed.
: UDP RTP Port 9045. Response received correctly with no translation. Phase 4-46 check passed.
: UDP RTP Port 9046. Response received correctly with no translation. Phase 4-47 check passed.
: UDP RTP Port 9047. Response received correctly with no translation. Phase 4-48 check passed.
: UDP RTP Port 9048. Response received correctly with no translation. Phase 4-49 check passed.
: UDP RTP Port 9049. Response received correctly with no translation. Phase 4-50 check passed.


Application exit code is 0

 

[stefanw]

du kannst dich an sipgate nicht an port 5070 anmelden, das ziel ist 5060 (nein mail server spricht bei default auch nur 25 mit dir und nicht 5070)

 

[anonymous]

Aber was macht man dann, wenn zwischen 3cx und sipgate eine VoIP-Fritzbox als Router ist?

 

[stefanw]

du änderst den FROM port der 3CX wie im blog post beschrieben, folge dem guide hier auf https://www.3cx.de/blog einfach ganz genau.
was da nicht drin steht musst du auch nicht machen