[CentOS] ssh x11 forwarding problem
Tony Schreiner
schreian at bc.edu
Mon Feb 20 15:42:14 UTC 2006
On Feb 18, 2006, at 10:47 AM, Ron Yorston wrote:
> Tony Schreiner <schreian at bc.edu> wrote:
>> Now, when using
>> X11UseLocalhost no
>>
>> no X applications work
>>
>> ssh myserver
>> # echo $DISPLAY
>> myserver.fqdn:10.0
>> # xdpyinfo
>> xdpyinfo: unable to open display "myserver.fqdn:10.0".
>
> It appears that in FC4 setting 'X11UseLocalhost no' causes sshd to
> listen
> for X connections only on the IPV6 port:
>
> $ netstat -ant | grep 6010
> tcp 0 0 :::
> 6010 :::* LISTEN
>
> I'd say this was a bug, and indeed there is such a report in the
> openssh
> bugzilla, but it's supposed to have been fixed years ago. I've tried
> forcing sshd to use IPV4 only (with the -4 flag) but that just gets me
> back into the land of X authentication failures.
>
> Ron
One more addendum
If X11UseLocalhost no
is required for the application
It can be made to work with
ListenAddress 0.0.0.0
X11UseLocalhost no
in /etc/ssh/sshd_config
but also, set
OPTIONS=-4
in /etc/sysconfig/sshd
then restart sshd
I remember this was a bug that developed in OpenSSH for Solaris, and
I don't know if it was ever fixed there either.
Tony Schreiner
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