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Chapter 8
316
Remote Desktop uses Windows XP Professional security features to grant or
deny access based on user permissions. Therefore, keep in mind the follow-
ing security considerations:
➤ You cannot typically make a connection to an external, nondomain com-
puter outside your firewall because Remote Desktop uses Terminal
Services and Remote Assistance technology that requires a specific port,
TCP port 3389 by default, to be open for the connection to work.
➤ Remote Desktop does not allow simultaneous remote and local access to
the Windows XP professional desktop.
Using Remote Assistance for
Troubleshooting
Remote Assistance enables a desktop support technician to view or share
control of a user’s computer running Windows XP. For remote assistance to
commence, either the “novice” must invite the “expert” to view or share con-
trol of the computer or the expert must “offer assistance” to the novice, who
must accept the offer.
The feature allows the user to invite a trusted person (the expert) to remote-
ly and interactively assist them. This feature is useful in situations where col-
laboration with a user is required to resolve remote computer problems.
Members of the Administrators and Domain Admins groups have Remote Desktop
Connection privileges by default.
Be aware of the difference between Remote Desktop Connections and Remote
Assistance. A Remote Desktop Connection establishes a new session. Remote
Assistance attaches another user (the expert) to an existing session.
To use Remote Assistance, both the novice and expert need to be present at their
computers and must cooperate with each other.
Remote Assistance requires that both computers are running the Microsoft Windows
XP operating system or later.
The Remote Assistance session can be initiated by either the novice or the
expert. A request for assistance is generally made through the local Help and
Support Center (see Figure 8.16).