Server unexpectedly closed network connection

This is a problem I was having today while making a remote connection via SSH with Putty into a Red Hat (RHEL) box. When trying to connection it would give me the
error message “Server unexpectedly closed network connection”.

First I checked var/log/messages and it was reporting:

ssdh: refused connect from xx.xxx.xxx.xxx

Then I revied my hosts.allow file in /etc

It turns out that I simply had a typo. So I fixed the error with VI, and saved it. Then I did a: Service SSHD Restart.

Afterwards, my Putty session logged in fine. =]

If you’re using a DNS name in your hosts.allow file, it could be a DNS problem to. Try using an IP address and see if that helps things along.

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