Free PBX Help

[CMUK]

Hi all,
Hope all is well, I am brand new to free PBX so please be patient , I have a lot of experience with more traditional systems, Avaya, Panasonic etc however I wanted to give this a try,
I have created a freepbx server on digitalocean and can access it etc, however I seem to need to keep stopping the inbuilt firewall every so often as it kicks me off regularly, I am doing this from the SSH console. How can I keep this inbuilt firewall enabled with allowing me HTTP/HTTPS access to the configuration page?
My other question is regarding extensions, I am struggling to register an extension, I see there is multiple types, I have tried PJSIP and CHANSIP with my snom820 handset I have lying around to little success, I believe I have opened the relevant ports for this also. Could someone explain what all the different extensions mean?
I’m sure once I have a phone registered I will have more questions, the full interface seems a lot more complex than what I had expected!
Thanks

Calum

Calum M
ACSS

 

[busster]

Whitelist your ip address.

I would use chansip. Most vanilla if you know what I mean.

Check you sip and chansip settings, ports.

most sip phones want to use 5060.