One of the biggest frustrations with attempting to use RDP to talk to Windows is that you can't use Network Level Authentication for RDP with Vista/Win7/Server2008. Since that comes turned on by default, you have to de-secure your Windows machine to allow connections from Linux. The 'rdesktop' project appears dead.
There is hope! FreeRDP is a branch of rdesktop that is actively being developed. In fact, three days ago they announced that they had cracked the NLA problem and are testing builds. This is devel, but it's progress!
There is hope! FreeRDP is a branch of rdesktop that is actively being developed. In fact, three days ago they announced that they had cracked the NLA problem and are testing builds. This is devel, but it's progress!