IBG-3:-JSC-Supercomputer-HowTo.md

@@ -50,7 +50,12 @@ efficiently.
          of the JuDoor SSH-key-upload-page. Background: The last two numbers of the
          ip-adress may vary between logins and the suffix `0.0/16` ensures that the from-clause stays valid for these variations.
 
-5.  Contact for Assistance:
+5.  Logging in to supercomputer:
+     -  JURECA: https://apps.fz-juelich.de/jsc/hps/jureca/access.html#logging-in-to-system-name
+         - on JURECA, enforce IPv4. For OpenSSH this can be done with the command line option `-4` or the configuration setting `AddressFamily inet`. In PuTTY the protocol can be overridden with the setting 'Internet protocol version' in the 'Connection' pane.
+     -  JUWELS: https://apps.fz-juelich.de/jsc/hps/juwels/access.html#logging-in-to-system-name
+
+6.  Contact for Assistance:
      -   If you encounter login issues or have questions about using the
          system, feel free to contact  for assistance.
          - Johannes: jo.keller@fz-juelich.de