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I have the following problem. From machine A I connect to machine B over the internet via ssh and port forwarding. Machine B is part of my local network and has connection to machine C which acts as a server inside the LAN.

A --------- | ---- B ---- C
  INTERNET GW        LAN      

Now I want to start a program on A that needs access to C without using a vpn connection. I tried ssh tunneling:

#user@A: ssh -N user@B -L 9999:B:9999

But when I start the program on A it cant connect to C. I guess it has something to do with A not having a route to C because it has only a local address (192.168.something) . How can I find out whats going wrong?

1 Answer 1

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This is what you need.

#user@A: ssh -N user@B -L 9999:C:9999

When you connect from A with telnet

#user@A: telnet localhost 9999
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  • Still i get a No route to host error when i try to telnet C 9999
    – greole
    Mar 1, 2014 at 10:52
  • Updated with telnet command
    – X Tian
    Mar 1, 2014 at 11:19
  • @greole of course. From A you should telnet A 9999 or localhost 9999
    – user55518
    Mar 1, 2014 at 12:18

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