How to give Users "Outside access" to Live Communications Server 2003
The document shows you how to configure ISA Server so that people working from home (like me, now), can access presence information without using VPN. Users can connect using TLS through ISA Server. This is possible by using a Live Communications Server Proxy in the DMZ. All of this configuration can result in users like me, not having to hunt around for my smartcard at home, and I can access my corporate Instant Messaging and presence information from outside the office. Fantastic!