failed to enable x11 forwarding

Question

I am trying to enable X11 forwarding on my server which is running on FreeBSD 7.1.

I have a putty installed in my windows in which i have enabled X11 forwarding by

checking on Enable X11 forwarding

and specifying following parameter

X display location localhost:0

after that i run putty and checked whether X11 is enabled or not by typing following command

echo "$DISPLAY" or echo $DISPLAY

but i am getting following error

DISPLAY: Undefined variable.

Even i have installed XManager but in that also i am getting following error

The X11 forwarding request was rejected ! To solve this problem, please turn on the X11 forwarding features of the remote SSH server

can anyone suggest me how to get rid off this ?

Did you try turning on the X11 forwarding features on the server?
that is what i am trying but i am getting failed whatever i tried till now is listed above

krtek · Answer 1 · 2011-02-25 16:41:29Z

up vote 1 down vote

Putty is not enough to enable X11 forwarding on Windows, you must have a X Server installed too.

You can for example install Cygwin X : http://x.cygwin.com/

answered Feb 25 '11 at 16:41

1

I just assumed he had. Another is Xming – Dennis Williamson Feb 25 '11 at 17:09

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Dennis Williamson · Answer 2 · 2011-02-25 15:19:51Z

up vote 0 down vote

In your /etc/ssh/sshd_config you need the following lines:

X11Forwarding yes
X11DisplayOffset 10

The second line above is the default. The value controls the starting DISPLAY for forwarded display numbers.

answered Feb 25 '11 at 15:19

	Well , i have found this lines under sshd_config file and i edit it using VI editor by removing # in front of them , but still getting the same problem – Hunt Feb 25 '11 at 16:09
	@Hunt: You may need to `pkill -SIGHUP -fx /usr/sbin/sshd` to get `sshd` to re-read the config file. – Dennis Williamson Feb 25 '11 at 16:27
	I tried the above command but the effect is same . still it is not enabled :( – Hunt Feb 25 '11 at 16:56
	@Hunt: You do have an X server installed on your local machine, don't you? – Dennis Williamson Feb 25 '11 at 17:09
	no i don't have X Server installed , is it required ? could you explain the procedure – Hunt Feb 25 '11 at 17:18

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2 Answers