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Date: Thu, 23 Feb 2006 10:53:13 -0500
To: "Lei Sun" <lei.sun@gmail.com>, questions@freebsd.org
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Subject: Re: Problem connecting a freebsd server using ssh
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At 03:50 AM 2/23/2006, Lei Sun wrote:
>1. ssh from Freebsd_A to Freebsd_B: I got "Read from socket failed: 
>Connection reset by peer" error.
>2. ssh from windows xp (putty) to Freebsd_B: logs me in fine
>3. try to ssh from Freebsd_A to Freebsd_B again, got the same error

I didn't did through your logs extensively.  But when I've run into 
similar problems recently, it's usually because one of the clients is 
using an older ( < v2) of the protocol.  At some point back in fBSD 
5.x support for the less-secure v1 ssh protocol became disabled by default.

Try editing /etc/ssh/sshd_config   and look for a "Protocol" 
option.  Try setting it to "Protocol 1,2"   However, the level one 
supposedly has some security holes, and you might not want to use it 
over the public Internet.  I just use it with my stupid windoze 
client that only does level one, to connect over our own LAN, so I don't care.

   -Wayne