This page describes RDP encryption...
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/termserv/termse
rv/remote_desktop_protocol.asp
Use a *strong* password or run RDP through a VPN or SSH tunnel for added
security. An added plus of running RDP through a VPN or SSH tunnel is that
you can also reach any PC on your LAN by only opening one port on your
firewall. You also might configure the XP Pro RDP host PC or Terminal Server
to only connect using high encryption versus low or client compatible. That
is configured using a group policy...
http://support.microsoft.com/kb/294751/en-us
Personally I use a strong password, limit RDP use to one user on each PC I
connect to, only use high encryption and run RDP through an OpenVPN
tunnel...

Signature
Al Jarvi (MS-MVP Windows Networking)
Please post *ALL* questions and replies to the news group for the
mutual benefit of all of us...
The MS-MVP Program - http://mvp.support.microsoft.com
This posting is provided "AS IS" with no warranties, and confers no
rights...
> Please, do you know what kind of security(¿encryption?) uses the Remote
> desktop connection?
> I'm evaluating the risks of this service in order to use it in the office
> and need to learn more about it.
> Thanks