Solved Cannot through FQDN

[PCProjectcfu]

Hello,

I just set up my 3cx and FQDN connection was working normally from external networks for a bit after I tried everything to open ports 5001, 5060, 5090, 5080, 80, 443, on my router. Now it's an hour later and for some reason I can't connect from 4G through my iPhone or 5G and I can connect to the localip:5001 normally as I used to.

What could be causing so many problems with the company's FQDN:5001? I'm typing https://fqdn:5001 to connect - and it is not working. This is the third or fourth installation I'm doing and it just seems inaccessible at this point even though an hour ago I somehow connected.

Our installation is using dynamic IP, runs on Debian OS, on a VM.

Edit: 10 minutes later and it's now working again. I do not know what to make of this.

 

[Saqqara]

Make sure your wan is set to dynamic under settings - networks. This will update your fqdn if the wan IP address changes

If you have standard or pro license, it can take 6 hours for the fqdn to be updated, and any change need to replicate across the global internet dns servers

This could be the reason why you could not access it

 

[ChrisC_3CX]

If it does happen again for some reason and you want to confirm what @Saqqara said, you can try both:

https:// <FQDN>:5001

and

https://<Public_IP>:5001

If only the one with the IP connects then it almost definitely a DNS related issue.


Will be marking this as solved for now but do let us know should anything else come up.