Port Forwarding on Sagemcom 5464

[trisgti]

Hardware Version = FAST5464 2.00

Software Version = SG4K100174

hi, I'm moving over to the TT-supplied router and trying to get my Nextcloud service working.

DDNS is set up, and I think I have 80 and 443 port forwarding set up correctly but I cannot hit the internal server via the DDNS URL (but can hit it using internal server ip address)

was working fine on previous router, nothing has changed in the internal setup other than router swap.

protocol = TCP

external host = *

internal host = ip of nextcloud server

external port = 80

internal port = 80

protocol = TCP

external host = *

internal host = ip of nextcloud server

external port = 443

internal port = 443

is there anything obvious I'm missing?  thanks

[KeithFrench]

Hi @trisgti 

@Michelle-TalkTalk has asked me to help you with this issue. Please can you confirm:-

1. What operating system & version is hosting this web server?
2. Have you allowed the ports through any PC firewalls?
3. How are you testing this, via a port-checking website or trying to connect from a device locally connected to the router, via your DDNS domain name?

If the latter, this will never work, due to NAT Loopback. Any traffic from the local network, that goes out to the internet & back in again is blocked by the router, as it believes it is a security vulnerability. The best way to test like this is to disconnect a smartphone from the router's WiFi & use mobile data.

[Michelle-TalkTalk]

Morning,

@KeithFrench - would you be able to offer any advice please?

Thanks

Michelle