WARNING! The remote SSH server rejected X11 forwarding request

The warning message “The remote SSH server rejected X11 forwarding request” indicates that your attempt to use X11 forwarding over SSH was denied by the remote server. X11 forwarding allows you to run graphical applications on a remote server and display them on your local machine.

Here are a few possible reasons for this rejection:

1. Server Configuration: The remote server might not be configured to allow X11 forwarding. This can be set in the SSH server configuration file (/etc/ssh/sshd_config) with the X11Forwarding directive.
2. Authentication Issues: There might be authentication problems, such as incorrect or missing X11 authentication credentials.
3. Firewall or Security Settings: Firewalls or security settings on the remote server might block X11 forwarding.
4. Client Configuration: Your local machine’s SSH client configuration might not be set up correctly to request X11 forwarding. This can be configured in the SSH client configuration file (/etc/ssh/ssh_config) with the ForwardX11 directive.

To resolve this issue, you can check and update the SSH configuration on both the client and server sides, ensuring that X11 forwarding is enabled and properly configured.

If you need more detailed steps on how to troubleshoot and fix this issue, feel free to ask!