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ssh proxy tunnel

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  1. You want to make use of the ProxyCommand option of ssh. Here is an example that uses one machine to connect to another.
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  3. You can add the following to your ~/.ssh/config file.
  4.  
  5. Host viatunnel
  6.   IdentityFile ~/.ssh/inside_server_rsa
  7.   ProxyCommand ssh -i ~/.ssh/proxy_server_rsa user@gateway.mynetwork "nc inside.mynetwork 22"
  8.   user myself
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  10. This will connect first to user@gatwway.mynetwork and use that to make a connection to myself@inside.mynetwork
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  12. Now typing: ssh viatunnel will connect using this configuration.
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  14. The ProxyCommand line basically runs 'nc' on the first hop of your connection and establishes a tunnel to port 22 on the second server. Then the outside ssh uses that to connect.
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  16. See ProxyCommand here at the openssh manual

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