[NTLUG:Discuss] Remote X stopped working.

[MadHat]

On Mar 25, 2005, at 12:56 AM, Lance Simmons wrote:
> * Steve Baker <sjbaker1 at airmail.net> [050325 00:18]:
>> On several machines both at home and at work, since being upgraded to
>> SuSE 9.1 or 9.2, the following procedure no longer works:
>>
>>   % xhost + access control disabled, clients can connect from any host
>>   % ssh myname at machineB
>
> Maybe /etc/ssh/ssh_config on the one machine or /etc/ssh/sshd_config on
> the other doesn't allow X11Forwarding?  (Not sure the file names are 
> the
> same for SuSE.)

This is not X11 forwarding.  X11 forwarding you would not have to rum 
xhost or set the display on machineB.  To use X11 forwarding, just run

ssh -X machineB xeyes

no xhost needed.  At least this is what I do on all my hosts.

My first guess would be a firewall on one of the hosts not allowing X11 
through.  Next step after checking for a firewall, I would use a 
network sniffer on each host to make the the traffic is seen on both 
sides.


>  That sometimes happens to me in Debian after I've done
> a fresh install on one of the machines, or allowed apt to replace the
> current ssh config files (which have the correct but less secure 
> option)
> with the default config files (which have the incorrect but more secure
> option).
>
> -- 
> Lance Simmons
> Oh what a tangled web we weave, when first we practice to deceive.
> 		-- Shakespeare
>
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