gmccullagh at gmail.com
Fri Dec 1 11:29:58 GMT 2006
On Fri, 01 Dec 2006, Pan, Richard wrote:
> Is anyone running their edubuntu server as an XDMPC server? I've been
> testing it out at my school. It seems like an interesting way to deliver
> linux specific applications to users while retaining the mac os and
> windows os at my school. Does anyone have any feedback on doing this?
Edubuntu uses something quite similar to XDMCP for its thin clients.
People have used XDMCP for quite a long time for thin clients. However,
one of the drawbacks of it is that all mouse-clicks, keystrokes and window
images get sent in the clear across the network. This means someone can
Instead edubuntu uses a tunnelled ssh session. ldm (a display manager)
runs on the thin client, you type your username to it and it starts an X
server and initiates an ssh connection to the server running an xsession
displayed locally. This means all network traffic is encrypted. There is
a cpu cost in the encryption but it's not too high as a cheap but
relatively secure cypher has been carefully chosen for ldm.
I'm not sure how hard porting ldm to windows would be. It's python so it
should be feasible -- particularly in cygwin.
If you are not concerned about the security, I've used XDMCP and it works well.
Another alternative might be NX, which is available freely, you can get a
client for windows and it usually runs over ssh. NX is mainly created to
run over very limited bandwidth (eg a DSL server from home).
More information about the edubuntu-users