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 % ssh -X -l userid remotehost

remotehost% /usr/openwin/bin/xclock
X11 connection rejected because of wrong authentication.
X connection to localhost:10.0 broken (explicit kill or server shutdown).

If you encounter X11 connection rejected because of wrong authentication error after logging to an UNIX/Linux host through ssh with X11 forwarding option, -X, check your /etc/inet/hosts file for multiple localhost entries; and remove the unnecessary ones.

For example, my /etc/inet/hosts has the following entries when the xclock failed with an X11 connection rejected .. error.

remotehost% cat /etc/inet/hosts

127.0.0.1       localhost       
::1     localhost       
10.2.211.150    sunfiret2000      loghost

Removing the 2nd line, ::1 localhost, fixed the issue.
_________________________
Technorati Tags:
UNIX | Linux | X11 | Troubleshooting

Posted by: Giri Mandalika.    # 11:00 PM Tweet

Comments:

I'd be interested in hearing more about this bug. Is ssh using IPv6 to connect to the server?

# posted by  Anonymous : 6:26 AM, January 23, 2008

 

No; IPv4, mrdeviant.

# posted by  Giri Mandalika : 2:10 AM, January 24, 2008

 

What versions of OpenSSH are running on the client and server? What does netstat say when you have the IPv6 localhost entry defined?

# posted by  Anonymous : 7:04 AM, January 24, 2008

 

fixed my bug. could you please explain the reason behind it

# posted by  Srimanth : 3:00 PM, May 20, 2011

 

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