CompTIA Linux+ XK0-006 (V8) Practice Question

The task calls for local port forwarding: a socket must listen on the developer workstation (port 15432) and forward every connection through the secure SSH channel to 127.0.0.1:5432 on the remote server. The -L option implements this in the form -L local_port:remote_host:remote_port. Therefore the command with -L 15432:localhost:5432 and the correct user and host establishes the tunnel. The -R flag would create the opposite (remote) direction, -D starts a SOCKS proxy and does not accept host:port arguments, and placing the remote host name before the local port misuses the bind_address field, so those alternatives fail to satisfy the requirement.