Hello Forum,
we have massive Problems with SIP Sessions behind a VPN Tunnel between a Sophos and a Lancom Router.
Customer has 2 LAN Networks on a central Sophos XG210 with latest firmware.
LAN 1 = Clients
LAN 2 = Telephone Devices and Telefon Server
From internal Network behind the sophos - No Problems
An external branch is connected via VPN with 2 Networks ( LAN Clients / LAN Telephony)
There are only Any/Any Allowed Rules between VPN and LAN
The clients have RDP Sessions to Network on central site ( No Problems)
The telephones from Branch have disconnects after 3-5 min. nearly every Call
My Questions:
Do you have a suggestesd way to finde this error ?
How can we log the sip sessions on central site to see a breakdown ?
Please don´t awnser with the standard KB :-) of course we have checked all this things, i will use such a Forum only after checking KB´s .
This KBs we have checked:
https://support.sophos.com/support/s/article/KB-000035917?language=en_US
https://support.sophos.com/support/s/article/KB-000037055?language=en_US
https://techbast.com/2021/01/sophos-xg-v18-troubleshooting-guide-with-sip-protocol-on-sophos-xg-firmware-version-18.html
Regards Christian
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