[CentOS] ssh X11 forwarding not working
Barry Schiffman
schiffo2000 at yahoo.com
Wed Oct 10 03:36:39 UTC 2007
--- Barry Schiffman <schiffo2000 at yahoo.com> wrote:
>
> --- Feizhou <feizhou at graffiti.net> wrote:
>
> > James A. Peltier wrote:
> > > I'm having problems with ssh.com and X11
> > forwarding
> > >
> > > ssh: SSH Secure Shell 3.2.0 (non-commercial
> > version) on i686-pc-linux-gnu
> > >
> > > I am in the process of testing some of my
> machines
> > with CentOS 5
> > > x86/x86_64 and have run into a bit of a snag.
> X11
> > Forwarding is not
> > > working.
> > >
> > > Any hints? I've checked the ssh config files
> and
> > they seem to be
> > > identical to the config files on our existing
> SuSE
> > 10.0 machines which
> > > are working. This is troubling indeed.
> > >
> > >
> >
> > ssh -v and see what the ssh client complains
> about.
>
> I just installed CentOS 5.0 on one machine here and
> have a similar problem. I haven't changed the config
> file from what was installed, and it looks pretty
> much
> like the config in CentOS 4.5.
>
> I've got openssh-4.3p2-16.el5 on the CentOS 5.0
> machine, and have tried to get X11 forwarding
> working
> on connections from three machines with different
> os's
> -- centos 4.5, ubuntu and Mac OS.
>
> ssh -v doesn't seem to say anything out of the
> ordinary. After authentication, it says:
>
> Entering interactive session.
> Requesting X11 forwarding with authentication
> spoofing.
>
> Trying to open an emacs window without a -d
> argument,
> I get a message about no address for localhost:6010.
>
> Supplying the -d argument, I get
> Xlib: connection to "xxx:0" refused by server
> Xlib: No protocol specified.
>
> Barry
>
I should've tried this before writing. If I set the
environment variable DISPLAY in the xterm after making
the ssh connection, it works.
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