Chapter 2. Remotely accessing a graphical application

Procedure

1. Launch the application remotely through waypipe and SSH.

   [local-user]$ waypipe -c lz4=9 ssh <remote-server> <application-binary>
   
   The authenticity of host '<remote-server> (<192.168.122.120>)' can't be established.
   ECDSA key fingerprint is SHA256:<uYwFlgtP/2YABMHKv5BtN7nHK9SHRL4hdYxAPJVK/kY>.
   Are you sure you want to continue connecting (yes/no/[fingerprint])?

2. Confirm that a server key is valid by checking its fingerprint.

3. Continue connecting by typing yes.

   Warning: Permanently added '<remote-server>' (ECDSA) to the list of known hosts.

4. When prompted, type the server password.

   remote-user's password:
   [remote-user]$

Procedure

1. Log in to the server by using SSH:

   [<local_user>]$ ssh -X -Y <remote_server>
   The authenticity of host '<remote_server> (192.168.122.120)' can't be established.
   ECDSA key fingerprint is SHA256:uYwFlgtP/2YABMHKv5BtN7nHK9SHRL4hdYxAPJVK/kY.
   Are you sure you want to continue connecting (yes/no/[fingerprint])?

2. Confirm that a server key is valid by checking its fingerprint.

   Note

   If you plan to log in to the server on a regular basis, add the user’s public key to the server by using the ssh-copy-id command.

3. Confirm by typing yes.

   Warning: Permanently added '<remote_server>' (ECDSA) to the list of known hosts.

4. When prompted, type the password of the user on the remote server:

   <remote_user>'s password:
   [<remote_user> ~]$

5. Launch the application from the command line:

   [<remote_user>]$ <application-binary>

   Tip

   To skip the intermediate terminal session, use the following command:

   [<local_user>]$ ssh user@server -X -Y -C <application-binary>

Procedure

1. Install basic X11 packages:

   # dnf install xorg-x11-xauth xorg-x11-fonts-\* dbus-x11

   Note

   Your applications might require additional graphical libraries.

2. Enable the X11Forwarding option in the /etc/ssh/sshd_config configuration file:

   X11Forwarding yes

   The option is disabled by default in RHEL.

3. Restart the sshd service:

   # systemctl restart sshd.service