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Suddenly can't connect via Putty to OpenSSH server

From my Windows 7 machine, I've consistently been able to connect via SSH (using Putty) to two different Linux servers. A few weeks ago, one of them stopped responding to connection attempts. Putty would just sit there with a black screen and eventually time out. Troubleshooting attempts:

  • It wasn't a local outgoing firewall (or Windows 7) problem, because I could still connect to other OpenSSH servers
  • It wasn't a problem with the OpenSSH server itself, because I could SSH to one server, and then SSH from there to the 'problem' server. 

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2015-12-23, 09:12 pm
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