Spice
From DWIKI
A new remote desktop protocol.
Links
Docs
Configuring the client
you might need to reconfigure X for optimaly performance, see the xml file on server:/etc/libvirt/qemu/
HOWTO
Spice via SSH tunnel
ssh-L 3128:192.168.100.11:3128 your.remote
FAQ
Video streaming vs latency
filter?