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Do not use XDMCP
- 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
- You will need a user account on calico
- Fire up your X11 server if not already running
- Turn on X11 tunneling/forwarding in your ssh client
- ssh to calico
- On calico, 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
Cats
- If you do not really need a full CDE desktop, please do not start one.
- Instead, just run the individual X applications you need.
- Fire up your local X11 server if not already running
- Turn on X11 tunneling/forwarding in your ssh client
- ssh to cats
- To start a CDE desktop, run:
- To instead just run individual X applications, just run the application. Eg. xterm
Calico
- If you do not really need a full Gnome/KDE desktop, please do not run one.
- Instead, just run the individual X applications you need.
- Fire up your local X11 server if not already running.
- Turn on X11 tunneling/forwarding in your ssh client
- ssh to cats
- To start a gnome desktop, run:
- To start a kde desktop, run:
- Otherwise, just execute the X application. eg xterm
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