Port Forward issue

[Inpending_Doom]

Hello Everyone

I am currently having issues with the port forward test of 3CX when it gets to testing port 9000 to 10998 most of the ports tested work fine except for some it says "Mapping does not match XPortnumber . Mapping is XPortnumber."

3CX is running on Windows 10 Pro behind a Fortigate Firewall I have tried with the option to preserve source port both enable and disabled with no change in results.

 

[cobaltit]

Assuming you followed this guide?:

https://www.3cx.com/docs/fortigate-firewall-configuration/

 

[eddv123]

This is clearly an issue with port mappings on your firewall as the screenshot advises.

One point however is how many simultaneous calls is this licence ? in most cases chances of actually getting up to using that many audio channels at any one time would be quite slim I think.