SSH

[mikebw at bilow.bilow.uu.ids.net (Mike Bilow)]

dberry wrote in a message to Mike Bilow:

 d> Does any know of a way to run x traffic over the ssh port. 
 d> We currently use ssh to connect  to our internal network but
 d> we also have people who want to user x-windows over the Net.
 d>  Most of the off site people with Windoze use tterm but
 d> there is no way to forward x traffic.  Any ideas? 

X forwarding is built into ssh:

       If the user is using X11 (the DISPLAY environment variable
       is  set),  the  connection to the X11 display is automati-
       cally forwarded to the remote side in such a way that  any
       X11  programs  started from the shell (or command) will go
       through the encrypted channel, and the connection  to  the
       real  X  server  will be made from the local machine.  The
       user should not manually set DISPLAY.  Forwarding  of  X11
       connections  can  be  configured on the command line or in
       configuration files.

       The DISPLAY value set by ssh  will  point  to  the  server
       machine,  but  with  a  display  number greater than zero.
       This is normal, and happens because ssh creates a  "proxy"
       X  server on the server machine for forwarding the connec-
       tions over the encrypted channel.

       Ssh will also automatically set up Xauthority data on  the
       server machine.  For this purpose, it will generate a ran-
       dom authorization cookie, store it in  Xauthority  on  the
       server,  and  verify  that any forwarded connections carry
       this cookie and replace it by the  real  cookie  when  the
       connection  is  opened.  The real authentication cookie is
       never sent to the server machine (and no cookies are  sent
       in the plain).

       If  the user is using an authentication agent, the connec-
       tion to the agent is automatically forwarded to the remote
       side unless disabled on command line or in a configuration
       file.

See the docs for more info.
 
-- Mike

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