Authenticating a first user in a protected network to an application in a
DMZ network shared simultaneously with a second user in an unprotected
network. The first user supplies a userID and a password to a first
server within the protected network for authentication for the
application. The first sewer checks authentication of the first user
based on the userID and password. If the first user is authentic, the
first server forwards to the application an authentication key for the
first user and a selection by the first user pertaining to the
application. The application checks authentication of the key, and if
authentic, complies with the selection by the first user. The second user
supplies another userID and another password to the application. If the
other userID and other password are authentic, the application complies
with a selection made by the second user pertaining to the application.