Remote port forwarding (an incoming tunnel) does the opposite to local port forwarding: it forwards traffic coming to a remote port to a specified local port.
For example, if you issue the following command
$ ssh2 -R 1234:localhost:23 username@host
all traffic which comes to port 1234 on the server (
host) will be forwarded to port 23 on the client (
When using SSH Tectia Client on Windows, the tunneling settings can be made under Profile Settings -> Tunneling.