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WebConf Lync 2010

Last Modified: 2012-08-13
Hello There,

I have setup a lync environment on my network, so far is working internally, I can do video conference, voice conference, from the outside I can only sing-in but I cannot join a conference from the outside, for example, if I create an invite from my Lync account and send it to my Gmail account I cannot join the meeting, I am getting like the website that is pointing on is not available, I am using all the defaults from Microsoft.

I have the edge server on a DMZ, and I have 3 Private IPs and 3 Public, so I am NAT-ing.
for SIP i am using sip.mycompany.com, for Web Conf I am using webconf.mycompany.com and for A/V av.mycompany.com, the DMZ addresses are

sip =
webconf -
av =

from the outside they are being mapped as

6x.xx.xx.150 for sip
6x.xx.xx.151 for webconf
6x.xx.xx.152 for AV

and on the topology builder where its says to specified the NAT address I am using the external address for AV

so, when I create a meeting using Lync the address to joing the meeting is:


so on my external DNS what address or ip should resolve meet.mycompany.com ?? everytjing is working internally as I can go to meet.mycompany.com using my .COM internal DNS and I get the lync web app page and if a user is on my network and tries to join the meeting it will work, so now, how can I make this work for the external people?

I dont have a reverse proxy, I have a firewall and I am opening and port forwarding the ports.

Any ideas?
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