Remote Desktop Connection and mapped drives

[mabbiss]

Hi,

I am using Remote Desktop Connection on a WinXP workstation to connect to a Win2K Server (through a firewall). The connection works fine but when I enable the map local drives option, the drives are not mapped.

I have port 3389 open on the firewall. Do I need to open another port for drive mapping ? Could drive mapping be blocked by local security policy ?

Any help much appreciated.