https://cygwin.com/pipermail/cygwin/2008-October/169986.html
Connection closed message when trying to connect with ssh using public key authentication to...
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https://www.digitalocean.com/community/questions/can-t-connect-with-ssh-with-ubuntu
Can't connect with ssh with Ubuntu | DigitalOcean
ssh root@107 .170.80.75 Connection closed by 107.170.80.75 ssh -vvvv root@107 .170.80.75 OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014 debug1:...
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