Fiber Optical Sensors in CMS

Both the LabView and the Java-based FOS projects are installed and run on the machine cms-alig-sen-02 (the production version is the Java-based one, that is supposed to run everytime). This machine is however hidden behind the CMS firewall therefore can only be reached through one of the CMS headnodes cmsusr0.cern.ch, cmsusr1.cern.ch or cmsusr2.cern.ch. In addition CMS headnodes are also hidden behind the CERN firewall, therefore if You want to reach the cms-alig-sen-02, You have need either to go through them or tunnel trough tem both.

Steps to reach cms-alig-sen-02 (if You start the connection from the CERN internal network, skip point 1):

1. yourmachine> ssh -X -l yourname lxplus.cern.ch

2. lxplus> ssh -X -l yourname cmsusr0

3. cmsusr> rdesktop -g1024x700 cms-alig-sen-02 &

4. when the Windows login screen pops up, type in the usual userid: Utente and the password we all know (if not, please contact me) The domain must be CERN.

Of course, since this is going to be an X connection, You have to enable the connection to Your Xserver first. If You run Windows on Your host machine, You have to have an extra Xserver installed. I have good experiences with Xming, but this is not the only one that can be used. From my Windows machine I used to use PuTTY to connect to the Unix/Linux machines. In order to be able to accept the X windows the remore server tries to send, I had to set the 'Enable X11 forwarding' checkbox in the SSH/X11 menu. This option forwards the X windows to my Xming Xserver.