Expose Local Port to Public Network with SSHD Remote Tunnel

expose_local_port_with_public_server_via_sshd.md

1. ensure remote server enables remote port fwd on non-loopback ip

#/etc/ssh/sshd_config
GatewayPorts yes

2. ssh

ssh -R [remote_port]:[destination_address]:[local_port] [username]@[ssh_server]

3. check listening hosts from remote server

say remote_port is 18000:

$ ss -plunt | grep 18000

Netid         State          Recv-Q          Send-Q                   Local Address:Port                    Peer Address:Port         Process
tcp           LISTEN         0               128                            0.0.0.0:18000                        0.0.0.0:*             users:(("sshd",pid=2714723,fd=10))