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From: luciop <lucio_piccoli AT hotmail DOT com>
Subject:  Re: ssh client disconnect error
Date: Tue, 22 Jul 2008 14:43:48 +0000 (UTC)
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Corinna Vinschen <corinna-cygwin <at> cygwin.com> writes:

> nslookup <numerical address>
> 
> > $less /etc/hosts
> > 127.0.0.1       localhost
> > 
> > $ nslookup localhost
> > Non-authoritative answer:
> > Server:  UnKnown
> > Address:  192.168.1.1:53
> 
> As I said, a DNS problem which you really should fix or let fix by your
> local admin.  localhost should be resolved to 127.0.0.1 (IPv4) and/or
> ::1 (IPv6).  It's resolved to 192.168.1.1 plus a port number 53 which is
> very wrong.  sshd will make a reverse lookup for 192.168.1.1, get a
> machine name different from localhost and complains correctly about a
> host name/address mismatch.


i think u have missed read the nslookup result.

$ nslookup localhost
Non-authoritative answer:
Server:  UnKnown
Address:  192.168.1.1:53

Name:    localhost
Address:  127.0.0.1

the 192.168.1.1:53 is my DHCP DNS/gateway.
it has correctly resolved localhost to 127.0.0.1

i managed to get it to work by modifying the hosts.allow by changing the
following line
from
ALL : PARANOID : deny
to
ALL : LOCAL : deny

removed the PARANOID checks for mismatched name to IP.

it doesnt solve why the sshd is getting the wrong ip for localhost.

any ideas most welcome

-lp


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