|
Main /
ConnectionFromTheOustideVPN accessYou can access the CEA network from the outside using a VPN (Virtual Private Network) You must be registered in a database of authorized users. Check with your "Correspondant Informatique" for the paperwork. All Windows notebooks configured by the CEA have a program to start the VPN (Contivity). Similar programs exist for Linux and MAC but we have not tested them. Once connected via the VPN, you have access to the Windows network as if you were at Neurospin. However, you may want to access the linux workstations for real work ;-) Here are two solutions: X server on Windows (solution 1)Under Windows, you should first install an X server, e.g. cygwin-x, then follow the steps: 1. start the VPN (Contivity VPN Client) 2. start cygwin and type "startxwin.sh" 3. In a xterm, you can now type "ssh -C -Y -l user_name station_name" to open a terminal on the station. Once connected to the remote machine, you can type in linux commands. It is even possible to launch Matlab, e.g. to run some batches, but my experience is that graphical display is slow, which may be due to the connection speed, or to cygwin-x. When you shutdown your local machine, the connection is lost. To avoid this problem, you can use screen to keep alive processes running in a terminal (does not work with programms that uses a GUI). In a nutshell, type "screen", launch your processes, type 'Ctrl-a d' and disconnect. When you reconnect, you can obtain the prevous terminal typing the command 'screen -r'. NX server (Solution 2)For better remote graphical performance, you can use NX. There are packages to install on the linux workstation, and a client to run on the local PC (mac, windows or linux). If anyone tries it, please provide detailed instructions here |