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Date: Thu, 1 Oct 2009 20:50:23 -0400
From: Garrett Wollman <wollman@bimajority.org>
To: johnea <me@johnea.net>
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Cc: freebsd-security@freebsd.org
Subject: openssh concerns
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<<On Thu, 01 Oct 2009 17:13:55 -0700, johnea <me@johnea.net> said:

> The thing that concerned me is an entry I saw in netstat showing
> my system connecting back to a machine that was attempting to log
> in to ssh.

> Does the ssh server establish a socket to a client attempting login?

The SSH protocol does not, but you appear to be using "TCP wrappers"
(/etc/hosts.allow) configured in such a way that it make an IDENT
protocol request back to the originating server.  This is rarely
likely to do anything useful and should probably be disabled.

> tcp4       0      0 atom.60448             host154.advance.com.ar.auth  TIME_WAIT

"auth" is the port number used by the IDENT protocol.

-GAWollman