For people still having problems with ssh forwarding X11, the first thing not
mentionend already that you should check is that if you edited
/etc/ssh/sshd_config on the solaris server side, you need to either type
"/etc/init.d/sshd restart" as root. Or reboot the Solaris box. Any edits to
sshd_config will not be picked up until you do this.
|> Thanks for mentioning the -v flag. That shows me this on my iMac in a
|> terminal window.
|>
|> email@hidden's password:
|> Warning: No xauth data; using fake authentication data for X11 forwarding.
"No xauth data" is not great - this implies you may have run "xhost +" on the
eMac or done something else to disable authentication. Still this is orthogonal
to the problem of getting ssh working.
|> debug1: Requesting X11 forwarding with authentication spoofing.
OK, good. this shows the eMac end is requesting X11 so any remaining issues are
at the Solaris/AIX end. Unfortunately it doesn't say if the remote system
agreed to do X11 forwarding.
|> What am I doing wrong?
As Tim Cutts pointed out, once you've logged in with ssh you don't want any more
X11 commands. (Well, it's actually possible to start a nested desktop with VNC
or with Xnest, but 99% of people don't want this). Instead you start individual
X-based commands within the terminal windo that's logged into the remote box.
As mentioned above, the next thing you should check is that you restarted sshd
first. See above.
Assuming you did this and then ran ssh from the eMac aftererwards, try the
following to verify it's working. Again, these commands go into the window
that's logged into the remote solaris/AIX box. either:
1) "echo $DISPLAY" should show something like "hostname:10.0". The
number may vary, but if this gives an error or a blank line then
forwarding is not working. If so make sure you edited sshd_config
and restarted sshd.
2) Try simple X11 command such as "xdpyinfo" (gives a textual
description of some info about your mac display), "xclock"
(simple clock), "xterm" (gives another terminal window on
the remote box), etc. On Solaris these particular commands
live in /usr/openwin/bin, and there are other commands in
/usr/dt/bin and elsewhere (in case the plain commands are
not in your path). Don't know about AIX.
In cases like this you should always start with some of these simple commands
first. and then go onto the commands you really want to run only after getting
these running.
Hugh.
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