Updated the digital ocean section

src/index.rst

@@ -162,7 +162,8 @@ The :doc:`tables-sample-app` walks you through the process of using a basic tabl
   sync-endpoint
   sync-endpoint-cloud-setup
   sync-endpoint-manual-setup
-  sync-endpoint-user-instructions.rst
+  sync-endpoint-user-instructions
+  ssh-tunneling
 
 .. toctree::
   :maxdepth: 2

src/ssh-tunneling.rst

@@ -0,0 +1,34 @@
+.. _ssh-tunneling:
+
+SSH Tunneling for ODK-X Sync Endpoint
+============================================
+
+Secure Shell (SSH) tunneling provides a secure way to access services remotely. The following instructions explain how to set up an SSH tunnel to access the admin portal for the ODK-X Sync Endpoint deployed in a cloud environment.
+
+1. Open your terminal or command prompt on your local machine and run the following command:
+
+   .. code-block:: console
+
+     $ ssh -L <local_port>:<server_ip>:40000 <user>@<ssh_server>
+
+Replace the placeholders with your actual values.
+
+.. image:: /img/ssh-tunneling/connect-to-server.png
+    :width: 600
+
+2. Once connected, you've created an SSH tunnel, allowing you to access the admin portal locally. Go to https://localhost:local_port to access the admin portal.
+
+.. image:: /img/ssh-tunneling/local-access.png
+    :width: 600
+
+.. _ssh-tunnel-additional-resources:
+
+Additional Resources
+-----------------------
+For more in-depth information on SSH tunneling, refer to the following resources:
+
+- `How to Set Up SSH Tunnel with PuTTY <https://tecadmin.net/putty-ssh-tunnel-and-port-forwarding/>`_
+- `Guide to Using SSH Port Forwarding (SSH Tunneling) <https://builtin.com/software-engineering-perspectives/ssh-port-forwarding>`_
+- `SSH Tunneling: Examples, Command, Server Config <https://www.ssh.com/academy/ssh/tunneling-example>`_
+
+Feel free to explore these resources for a deeper understanding of SSH tunneling concepts and usage.