CODEWITHSUNDEEP
linuxsshx11forwarding
Troskyvs
Troskyvs

Reputation: 8087

How does mobaXterm know whether x11 forwarding is working on remote server?

When using SSH mode to connect to some linux servers:

For some servers, mobaxterm shows "X11-forwarding : ✔ (remote display is forwarded through SSH)" and I can start some gui application in local windows.

For some servers, mobaxterm shows "X11-forwarding : ✘ (disabled or not supported by server)

My question is, how does mobaxterm know this information? On both servers I've configured /etc/ssh/ssh_config to have:

X11Forwarding yes

ForwardX11 yes

I'm not sure which config line really works so I had both. Question is, how does mobaxterm know, is it part of ssh communication to tell, whether the linux server supports ssh forwarding or not?

Upvotes: 4

Views: 64594

Answers (4)

Rudolf Starosta - Rudi
Rudolf Starosta - Rudi

Reputation: 305

For me worked the solution described here https://superuser.com/questions/249045/x11-forwarding-from-amazon-ec2-ami especially:

sudo yum install xorg-x11-xauth.x86_64 xorg-x11-server-utils.x86_64 dbus-x11.x86_64

Upvotes: 0

sudhir
sudhir

Reputation: 271

  1. Ensure xorg-x11-xauth is installed

  2. /etc/ssh/sshd_config:

# AddressFamily any
AddressFamily inet

AllowTcpForwarding yes
X11Forwarding yes
X11DisplayOffset 10
X11UseLocalhost yes

https://bbs.archlinux.org/viewtopic.php?id=218584

Upvotes: 26

S. Bernel
S. Bernel

Reputation: 1

On Solaris, xauth might be in different locations depending on the OS release (/usr/bin or /usr/openwin/bin).

So it is also worth verifying that the parameter XAuthLocation is correctly set in /etc/ssh/sshd_config.

HTH, Stefane

Upvotes: 0

Dan H
Dan H

Reputation: 14570

I was having a similar problem: MobaXterm was saying one of my servers DID support X11 forwarding, and the other didn't. This was maddening, as the /etc/ssh/ssh_config files were identical. My problem was answered here.

Seems you are looking in the wrong place, like I was.

  • The file /etc/ssh/ssh_config configures SSH clients on your host.
  • The file /etc/ssh/sshd_config configures the SSH server on your host.

Thus, check for the line "X11Forwarding" in your /etc/ssh/sshd_config file. (Note the "d".) If uncommented and set to "yes", then X11 forwarding should work... and I bet MobaXterm will detect this.

Upvotes: 7

Related Questions