Reproduzido deste artigo :
By default, a Terminal Server uses
port 3389 for RDP traffic. By default,
every single competent hacker in the
world knows that a Terminal Server
uses port 3389 for RDP traffic. That
being the case, one of the quickest
changes you can make to your terminal
server environment to detour potential
intruders is to change this default
port assignment.
In order to change the default RDP
port for a Terminal Server, open
regedit and browse to
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal
Server\WinStations\RDP-Tcp. Locate the
PortNumber key and replace the hex
value 00000D3D (which is equivalent to
3389) to the appropriate hex value for
the port you wish to use.
Alternatively, you can change the port
number used by your Terminal Server on
a per connection basis. While still
using regedit, browse to
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal
Server\WinStations\connection name.
Again, locate the PortNumber key and
replace the hex value in place with
the value you wish to use.
Keep in mind that when changing this
setting on your server, all connecting
clients will need to be sure they are
connecting to the Terminal Server with
the new port extension tagged on to
the servers IP address. For example,
connecting to a Terminal Server with
an internal IP address of 192.168.0.1
which is now using the non-standard
port 8888 would require a user to
enter 192.168.0.1:8888 into the Remote
Desktop Connection client.
texto alternativo http://www.windowsecurity.com/img/upl/image0061242729824609.jpg
Por favor, note que você precisaria abrir o firewall para permitir a conexão de entrada na nova porta. Além disso, não se esqueça de tomar algumas precauções antes de editar o registro, como a criação de um ponto de restauração do sistema.
