Hello everyone.
Since I upgraded my device to version 17.0.8 MR-8 I have lost remote access to the extensions of my PBX. In the version I had before updating (now I do not remember what version it was) when creating the rules in the firewall I could choose a port, or a list or range and now I do not have that rank function, and I need to enable the range of ports in UDP 10000 - 12000.
Attached screenshot of how the rule is in the firewall.
I tried some softphones, like GS Wave, Linkus, 3CX and Zoiper. In the PBX the NAT settings are OK.
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