The main issue is that the external Lync clients can't connect to the Lync server. The reason this happens is blocked ports on TMG.<o:p></o:p>
There is Non-web server publishing rules setup allowing inbound connection from public ip to Lyncedge server's external ip using tcp ports: 443, 444, 445, 5061, 50000-59999 (inbound).<o:p></o:p>
All the rules use to work fine and the external Lync clients were connecting fine, but now when i test the ports on the public ip, using web tools (like checkmyports.net) I am getting "Port is Closed" for all of them.
What is not allowing the ports to be open?<o:p></o:p>
Nothing has been changed on the TMG server. The other rules (Activesync and OWA access) on the TMG work with no problem.<o:p></o:p>
Any help would be greatly appreciated!<o:p></o:p>