Instant Messaging uses the security architecture supplied by Windows 2000 Server and Microsoft Exchange 2000 Server.
The security features of Instant Messaging are particularly useful in corporate environments. Users are authenticated to the Instant Messaging service using digest or Integrated Windows authentication. Every user can have Allow or Deny lists to grant or deny access to particular sets of users. For added security, administrators can also examine and manipulate these lists .
This sections contains the following topics: