wodSSHTunnel component is server-type component that will add secure tunneling (based on SSH protocol) capabilities to your application. Based on your rules and definitions, it will accept local connections, encrypt it and forward to SSH server (where they will be decrypted and sent to destination host). SSH server is required for this component to work - encryption will take place between local computer (running wodSSHTunnel) and SSH server of your choice.
It can work in both sides - it can accept local connections and forward them to the server, or can initiate connections towards local services when notification is received from SSH server for 'remote port forwarding' request - based on your previous request.