I am using LCS Server 2005 Standard Edition SP1 on Windows 2003 Enterprise in Live Communcation Server and Access-Poxy configuration but no director in betweeen. Access Proxy Server has two NICs one is directly connected to internet and other on network where LCS connected. Chat session works normally whether initiated from inide or internet.
We came across two problems so far... 1) Application sharing session inititiated from inside works normally, but when initiated from internet network. It shows following error message to internet partcipant while there is no firewall/NAT device there.
"Cannot establish the data sharing session with Buddy_name, either because Buddy_name canceled the sessionor because you or the person you are calling is behind a firewall or Network Address Translator (NAT)."
2) Voice Session established successfully that initieted from either side. Outside user can hear voice of inside, but inside user unable to hear voice of internet/outside user.