Timothy Wilson wrote:
> 
> Hey everyone,
> 
> I haven't been able to log in remotely to my science dept. server since
> installing Debian stable on it a while ago. SSH sessions are fine from our
> LAN, but from home I get the following:
> 
> wilson at copland:~$ ssh -l wilsont science.sibley.isd197.k12.mn.us
> ssh_exchange_identification: Connection closed by remote host
> 
> What's ssh_exchange_identification? FWIW, I'm using Debian woody here at
> home which is the same as my workstation at work. Any ideas?
> 


Check your /etc/hosts.allow and /etc/hosts.deny files. You will get this
error if you're being blocked by tcp-wrappers.