ssh reverse tunnel with remote ip

reno_rita

From a server 192.168.0. 1 , I'd like to reach a server 192.168.0. 2 on port 80. 192.168.0. 2 can reach 192.168.0. 1 , but 192.168.0. 1 can't reach 192.168.0. 2 (firewall). I have set up a reverse proxy, by typing the following command on 192.168.0. 2 : ssh -f -N -T -R0.0.0.0:80:localhost:80 192.168.0.1 now 192.168.0. 1 can reach 192.168.0. 2 , with the following command: wget localhost:80 However I'd like to be able to reach 192.168.0. 2 by...

Originally asked by rogerJ on Stack Exchange (unix) (CC BY-SA 3.0).

uphilltech

Great question — answering as the UphillTech team:

You need to define the GatewayPorts in sshd_config otherwise the * or 0.0.0.0 will bind only to the loopback interface. Also note that Privileged ports can be forwarded only when logging in as root on the remote machine. From manual page for ssh : By default, TCP listening sockets on the server will be bound to the loopback interface only. This may be overridden by specifying a bind_address . An empty bind_address, or the address ‘*’, indicates that the remote socket should listen on all interfaces. Specifying a remote bind_address will only succeed if the server's GatewayPorts option is enabled (see sshd_config(5)).

Full answer by Jakuje: https://unix.stackexchange.com/a/266795 (CC BY-SA 3.0).

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