http://x2go.org

http://wiki.x2go.org/doku.php/wiki:repositories:debian

http://unixforum.org/index.php?showtopic=108708&st=60

apt-key adv --recv-keys --keyserver keys.gnupg.net E1F958385BFE2B6E


apt-get install x2goclient x2goserver-xsession x2gothinclient