Allow external IP range and ports

Hi all, We are having a few problems with our VOIP phones. I believe it may be to the firewall, but I not 100% sure. I need to allow an IP address range and some ports. I have created a firewall...
No way to allow web proxy access from the WAN interface?

Is it correct, that it is not possible to access the web proxy via the WAN interface, even if there is a suitable ‘Local service ACL exception rule’ ... or does anyone have a solution for this? I always...