[techtalk] ssh woes/mysteries

[Michelle Murrain]

Hi Folks,

I'm having some trouble with ssh/sshd, in a way that is totally 
mysterious to me. There are also some other server weirdnesses that 
might be related, but they may be coincidences.

I've been happily sshing to this server from my home mac and linux 
box for months now. All of a sudden, I can't. I get the following 
error from the linux box (the mac Nifty telnet window just opens and 
closes): ssh_exchange_identification: Connection closed by remote host

Now my bit of research suggests that this has to do with ssh1 and 
ssh2 not talking with one another, or something like that. Except, no 
changes have been made on either side! I didn't upgrade Nifty telnet, 
nor has sshd on the  server changed. But something I could do 
yesterday I can't today. However, I can ssh from a different outside 
machine, like I always could.

The strange part, is I also can't ssh into that box from a Mac OS X 
machine that sits next to it. But other linux boxes on the network 
work fine.

Other strangenesses: IMAP stopped working, as well as netatalk. But 
POP, FTP and apache work fine. I restarted processes, and re-booted 
the machine, too.

And doing a port scan suggests that the ssh, imap and afpovertcp 
(appletalk) ports are open and ready. The processes (sshd, afpd) are 
running.

I'm stumped, totally. Suggestions?

Michelle
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