I have an employee working remotely over RDP from a windows 7 machine to other windows 7 over the internet. The Broadband line I am using is fairly slow and I have no alternatives apart from a leased line which is too expensive. I have used Logmein and a VPN and it is all to slow but the RDP connection is fast enough for him to use but I am concerned about security. I have set it up so only his IP address can access the PC but I cannot see how I can beef up the RDP encryption. I have Googled around and all I can see is stuff on server 2008 terminal services, which is not relevant to this setup.
Is there a way to increase the encryption on an RDP connection? and how safe is this setup?