ssh_exchange_identification: Connection closed by remote host under Git bash

Question

I work at win7 and set up git server with sshd. I git --bare init myapp.git, and clone ssh://git@localhost/home/git/myapp.git in Cywgin

Answer 1

Similar to Arun Sangal the problem lied in an in .ssh/config entry

Host my.sshhost.com
  ProxyCommand ssh -q -W %h:%p myremotemachine.my.company.com

The remote machine was added to avoid with ssh for VPN connections and worked well. But for the vacation period I switched off the myremotemachine and run into the described problem.