$ ssh -R 9000:localhost:3000 user@example.com

For Windows

plink.exe -ssh -l user -pw <PWD> -R 9000:localhost:3000 example.com -P 22 -batch

The syntax here is very similar to local port forwarding, with a single change of -L for -R. But as with local port forwarding, the syntax remains the same.

First you need to specify the port on which th remote server will listen, which in this case is 9000, and next follows localhost for your local machine, and the local port, which in this case is 3000.

There is one more thing you need to do to enable this. SSH doesn’t by default allow remote hosts to forwarded ports. To enable this open /etc/ssh/sshd_config and add the following line somewhere in that config file.

GatewayPorts yes

Make sure you add it only once!

$ sudo vim /etc/ssh/sshd_config

And restart SSH

$ sudo service ssh restart