we are having troubles when starting Citrix GoToMeeting Webcam-Sharing. The proxy uses NTLM authentication and I'm afraid the citrix webcam module doesn't support a proxy with authentication. If I try to activate the cam I just see the message "Contacting server" and thats all. I turned on debug logging and saw that authentication doesn't work. Normally I would put the User Agent or URL host to the global whitelist, or just would say, that authentication should be skipped for this user agent/ url host/or domain, but the module doesn't send any User Agent and it tries to contact a lot of different IP Adresses.
Furthermore I turned on the GoToMeeting wizard to check the connection and it always stops by showing a message, that the proxy needs my credentials, if I type them in, the same message appears again. So authentication fails.
Did anyone have this problem before?
The article could be applied to authentication as well if needed to bypass citrix related IPs from authentication (as it sounds like the issue is related to).
It shows you how to leverage McAfee Maintained lists such as the Citrix related IP ranges, so you dont have to manage it.