LKBEN10953: No xauth program; cannot forward with spoofing message with ssh and X


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LKB | Created: 02/04/2020 | Version: 0 | Language: EN | Rating: 0 | Outdated: False | Marked for deletion: False

Author: Wim Peeters - Keskon GmbH & Co. KG


Symptom

Your ssh client ask an X11 redirection but you cannot run it on a remote machine

Cause

You do not have the right installation. You should install xauth.

Solution

You can install xauth with:

apt-get install xbase-clients

now try again like: ssh -X -l username remotehost

You should be able to start X programs. If you dont, check your variable $DISPLAY. Also check the debug output of ssh -v -X -l username remotehost.

Here you should find the line: "Requesting X11 forwarding with authentication spoofing"

About the Author

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.

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