CODEWITHSUNDEEP
linuxcommand-linesshtunneltunneling
Bigs
Bigs

Reputation: 616

how to replicate putty ssh tunnel settings with pure command line commands?

After a day of searching I am unable to replicate the feature with command line for ssh tunnel and reverse tunnel.

reverse ssh tunnel configuration reverse ssh tunnel configuration to the SSH server normal ssh tunnel configuration enter image description here

with the UI settings above I am able to get it working with instruction on the web!

currently I am trying to do

device 1 connect to (ssh server) and passes its port 80 to port 9191 onto the server then the server relays the port 9191 to device #3.

(device #1 reverse tunnel port 9191 to server device #2) <--> (server device #2 receives port 80 and use it as port 9191 which will relay to device #3) <--> (device #3 with normal tunnel to get port 9191 from device #1 with device #2 being the middle man)

I am able to use the putty user interface to click do get it working, but I am unable to replicate a working situation with command line. ssh command line examples out there do not seem to work.

for example: on reverse tunnel device

ssh -R 9191:localhost:80 root@localhost

on the normal tunnel device

ssh -L 9191:localhost:9191 root@localhost

please let me know if the question is lacking info or unclear thanks!

To clarify my intent, I am trying to make a tunnel between (2 android devices) with a SSH server. I can't SSH directly into an android mobile device simply because of firewall issue, so I have to use a standalone SSH server to act as a middleman to help relay the connection. However if there is any other better options please let me know as well, for example VPN or anything which may not use a lot of battery power on our mobile devices through 3g/wifi.

any other options would be fine but please consider 3g/wifi/firewall/battery consumption/data overhead concerns as well. I am not sure how does the major mobile app handle this, so any new ideas or methods are welcomed.

thanks in advanced

Upvotes: 1

Views: 6387

Answers (2)

Ryu_hayabusa
Ryu_hayabusa

Reputation: 3722

On Device A

ssh -R 9191:127.0.0.1:80 user@RemoteHost

On Device B

ssh -L 9191:127.0.0.1:9191 user@RemoteHost

Upvotes: 0

Cees Timmerman
Cees Timmerman

Reputation: 19644

As i understand from the comments, you're on Device 1 (Android A), trying to talk to Device 3 (Android B) via Device 2 (SSH host).

Try this on Android A:

ssh -L 9191:android_b:9191 root@ssh_host

On Android B:

ssh -L 9191:android_a:80 root@ssh_host

Or also from Android A:

ssh -R 9191:android_a:80 root@ssh_host

That should serve Android A's port 80 on Android B's port 9191, and that one on Android A's port 9191.

Upvotes: 2

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