Putty SSH Tunnel

References: http://oldsite.precedence.co.uk/nc/putty.html

Through the putty client settings, you can use tunnel to access specific ports of the remote server.

To access the remote server IP address 10.68.35.14, MySQL port: 3306

In this case, port 3306 of the server is not open to the outside, so you can set it through putty tunnels,

Set tunnel source port to 6666,

Set destination to localhost: port, for example, remote service localhost: 3306.

In this way, all messages sent to port 6666 of the local machine are developed to port 3306 of the server through SSH to achieve secure communication between the local machine and the server.