Direct SSH tunnel

A direct SSH tunnel, also known as local port forwarding, allows the creation of a tunnel that redirects traffic from a local address and port, to a specified port on a remote server, via an SSH connection

Direct tunneling is enabled with the -L flag, with the supplied values: [local_address:]local_port:destination_address:destination_port.

$ ssh user@server -L [local_address:]local_port:destination_address:destination_port

Eg. Direct tunneling from the local machine's localhost at port 8000 to the localhost on the remote server side at port 8888.

$ ssh user@13.10.10.10 -L 127.0.0.1:8000:127.0.0.1:8888
$ ssh user@13.10.10.10 -L 8000:127.0.0.1:8888

Notice that the only 3 values are provided, as the first value would default to bind on all interfaces (0.0.0.0) if omitted.