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395 bytes added ,  15:15, 4 September 2010
Added section and commands for users who install via express CD. Changed ssh_config to sshd_config
=X11 Forwarding=
===Prerequisites for remotely displaying applications===
For this X11 Forwarding to work requires it will require your Amahi server to have an a X server installed.  If you installed Amahi via the express CD you can install the X server with the following commands: ====Commands For Installing X Server on Express Installation==== Become root:  su - Enter your password for the root user  yum -y install Xorg ====Configuring X11Forward on Amahi Server==== Second is the ability to receive ssh connections (configured by default). Finally, ssh must be configured to allow X11 forwarding. Check ''/etc/ssh/ssh_config '' and make sure the directive is set:   X11Forward yes
X11Forward yes
Once this is configured you are ready to forward application windows.
From the client machine, where you want the application to be displayed, you ssh into the remote system so you have a command prompt. The can attained using the ssh command. When using the ssh command we need to use the ''-X '' flag, this tells ssh that we plan to tunnel x traffic through the tunnel:
ssh -X user@hda
ssh -X user@hda  Enter your password at the login prompt. You should see the prompt change into ''[user@localhost ~]$ '' Once logged in, run the following command to see a file window:   nautilus
nautilus
This should open a gnome file window as if on the server locally.
===Trusted X11 Forwarding===
If the ''/etc/ssh/ssh_config sshd_config'' file on the Amahi server contains the following line (set by default):   ForwardX11Trusted yes
ForwardX11Trusted yes
Then it's possible to use trusted X11 forwarding. Trusted X11 forwarding is slightly faster than untrusted because it doesn't engage the X11 security controls. The -Y flag is used when using trusted X11 forwarding:
ssh -Y user@hda
ssh -Y user@hda  ===Compressed X11 Forwarding=== When using slower links, X11 data can be compressed using the ''-C'' flag:
When using slower links, X11 data can be compressed using the -C flag:
ssh -Y -C user@hda
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