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XDMCP Warnings
- Used by itself, XDMCP is NOT SECURE.
- Like telnet, xdmcp connections are not encrypted and can be easily eavesdropped on.
- Anything you type in, including passwords, can be captured by anyone else on the network.
- Any data you do not wish disclosed to others can be easily captured by anyone else on the network.
- Instead, encrypt your connection to the remote computer with ssh tunneling. See below.
Prerequisites
- An X11 server installed on your local machine
- Under Windows, purchase a copy of Exceed from CU Software Licensing
- Under MAC OS X, install the X11 which came with your copy of OS X
- Under other unices, install XFree86 or Xorg
- A ssh client
- Under Windows, google for and install the free TTSSH or Putty
- Under Mac OS X, commandline ssh is built in
- Under unices, commandline ssh is built in
Jeol (using XDMCP)
Windows
- Double click the Jeol9300 or Jeol6300 icon on the Windows desktop (this will auto start a special XMing)
SunRay (JEOL 9300)
- Open a terminal
- Run:
-
- In the above command, if server screen :1 is in use, you should try :2 or :3 or so on
- Login to the jeol
- Keep in mind that your connection between calico and jeol is NOT encrypted
JEOL 6300 (ssh)
Windows
- Start XMing
- Open Putty
- Under Connection → SSH → X11, check the box to "Enable X11 Forwarding"
- Under Session, for the Host Name, enter in jeol6300.cnf.cornell.edu
- The username and password are available from the JEOL6300 tool managers.
- In the JEOL6300 terminal, type in commands to locally display the remotely running GUI JEOL applications.
SunRays
- Open a terminal
- Assuming the username is jeol_username (username and password are available from the JEOL6300 tool managers), type in
Korat/Minx
- Only accessible from a local CNF network
- If on a CNF Windows system, first start XMing
- On either CNF Windows or SunRays, double click the Korat or the Minx icon on your Desktop (also under the Applications menu on SunRays)
- You will be prompted for your CNF username and password
- If you receive an error about being unable to lock your .Xauthority file, please see https://confluence.cornell.edu/display/CNF/.Xauthority+Locking+Issues
- Type in the name of the application, such as "ledit" or "LayoutBEAMER" you wish to run.