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I am using a reverse-ssh tunnel to make a DB behind firewall available from remote machine. But here is the intriguing part:

From AWS server with ssh tunnel to DB behind firewall: connecting to IP and PORT Connects successfully

From remote machine: connecting to the same IP and PORT Couldn't connect to server

AWS security group settings allow connections to given port. Question: how do I troubleshoot?

  • Is the was address natted. Is it the same internally as externally, are you using cloudfront? Can you ping it? – Paddy Carroll Aug 10 '13 at 8:31
  • @PaddyCarroll, I have missed the basics!!! The internal AWS IP was different from its real one! Stupid me. Thank you very much. Would you like to post this as an answer, so I can accept it? – Tony Sepia Aug 10 '13 at 9:07
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Is the AWS address natted. Is it the same internally as externally, are you using cloudfront? Can you ping it.

  • I have missed the basics!!! The internal AWS IP was different from its real one! Stupid me. Thank you very much – Tony Sepia Aug 10 '13 at 20:56

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