How can I allow NAT Loopback on a Draytek Vigor 2820?
We are setting up soft phones from mobile devices and they can only be set to use the external IP, problem is you can't access the external IP from inside the network. So I think I need to allow NAT Loopback, problem is I'm not sure how to achieve this, I have taken a pretty good look on the internet?
Any help would be great! Thank you