No xauth Program; Cannot Forward With Spoofing Error and Solution

I want to use my local machine as the X server over ssh. But when I try to run the command ssh -X -v user@server1.example.com> to the remote machine, I get the following error:
debug1: Remote: No xauth program; cannot forward with spoofing

How do I fix this problem and use X over ssh?

You need to have the xauth program installed on remote system. The xauth command is used to edit and display the authorization information used in connecting to the X server. You also need $HOME/.Xauthority default authority file.

Install xauth

Type the following command to install xauth under Fedora / RHEL / CentOS / Scientific / Red Hat Enterprise Linux:
# yum search xauth
# yum install xorg-x11-xauth

If you are using Debian / Ububtu Linux, enter:
$ sudo apt-get install xauth
The above command will install xauth and required libraries on the remote system. Now, you can connect using ssh as follows:
$ ssh -X user@s42.nixcraft.net.in
OR
$ ssh -X -C -c blowfish-cbc,arcfour user@s42.nixcraft.net.in

Posted by: SXI ADMIN

The author is the creator of SXI LLC and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.

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