Hello, I am currently facing an issue with an older version of ASTLinux PBX that I’ve been using for several years. Recently, I moved the PBX to a new location and established a VPN connection, but since the relocation, the previously working clients no longer function correctly. They briefly register, then immediately unregister. I do not have double NAT in place; I have a router directly in the DMZ that builds the VPN connection.
The phones are Snom and Gigaset models. Both are unable to maintain a stable connection. However, when using the VPN from my MacBook with a phone app, the internal numbers stay registered permanently over the same OpenVPN connection. At location 1, the phones have IP addresses like 192.168.1.10, 192.168.1.11, etc. When connected via VPN, they register with IP addresses like 192.168.20.xx, but with different ports. At location 2, the IP addresses are 192.168.5.10, 192.168.5.11, and so on. Everything works fine at the new location, but only five phones are connected. Here is the relevant part of my SIP configuration: [general] useragent=MYOLDPBX port=5060 context = from-sip-external alwaysauthreject=yes deny=0.0.0.0/0.0.0.0 permit=192.168.1.0/255.255.255.0 permit=192.168.20.0/255.255.255.0 permit=192.168.5.0/255.255.255.0 localnet=192.168.20.0/24 localnet=192.168.5.0/24 localnet=192.168.1.0/24 allowguest=no disallow=all allow=alaw allow=ulaw language=de registerattempts=3 registertimeout=20 register_retry_403=yes maxexpiry=3600 defaultexpiry=200 qualify=1000 notifycid=yes srvlookup=no nat=yes allowsubscribe=yes subscribecontext=hints trustrpid=yes sendrpid=yes faxdetect=yes SIP Numbers Name/username Host Dyn Forcerport ACL Port Status 10/10 192.168.20.2 D N 36395 UNREACHABLE 11/11 192.168.20.2 D N 54644 UNREACHABLE 110/110 192.168.5.29 D N 5060 OK (8 ms) 111/111 192.168.5.59 D N 5060 OK (10 ms) 113/113 192.168.5.129 D N 5060 OK (9 ms) 114/114 192.168.5.228 D N 5060 OK (9 ms) 12/12 192.168.20.2 D N 41784 UNREACHABLE 13/13 192.168.20.2 D N 54146 OK (12 ms) 14/14 192.168.20.2 D N 54627 UNREACHABLE As you can see, some devices are marked as unreachable despite using the correct IP addresses. Could you please help me troubleshoot this issue? I would appreciate any guidance on resolving the connectivity problem, particularly with regards to the VPN setup and SIP registration. Best regards, nedi
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