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Date:      Wed, 24 Sep 1997 03:08:30 -0700 (PDT)
From:      Dmitry Kohmanyuk <dk@dog.farm.org>
To:        freebsd-hackers@freebsd.org
Subject:   Re: r-cmds and DNS and /etc/host.conf
Message-ID:  <199709241008.DAA06292@dog.farm.org>

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In article <199709240552.WAA02858@dog.farm.org> you wrote:
> In article <34287531.FB18FE1F@ptway.com> you wrote:
> > > > In article
> > > <199709222122.RAA02406.kithrup.freebsd.hackers@lakes.dignus.com> you
> > > write:
> > > > > What's strange is that things on the gateway machine seem to
> > > access
> > > > >the local network (presumably using /etc/hosts) just fine.  It's
> > > > >only rlogin's to the gateway machine from the internal network
> > > > >that are causing the problem...

> I have just tested this on two machines, client running 2.2-old and 
> server running 2.2.2-R.  The bug is there, in rlogind or libraries it uses.

> # tcpdump -l -i lo0 -s 512                                                      tcpdump: listening on lo0
> 22:53:50.569483 localhost.1319 > localhost.domain: 31153+ A? dog.stranger.com. (34)
> 22:53:50.570916 localhost.domain > localhost.1319: 31153 NXDomain* 0/1/0 (87)
> 22:53:50.572942 localhost.1320 > localhost.domain: 31154+ A? dog. (21)
> 22:53:50.573687 localhost.domain > localhost.1320: 31154 NXDomain* 0/0/0 (21)

> so, server tried to resolve names `dog.stranger.com.' - note the trailing 
> dot - and then `dog.'   (dog is client machine;  stranger.com is domain).
> None of those are in hosts, of course.

the lookups occur only if .rhosts is present.  So, it's in
/usr/src/lib/libc/net/rcmd.c:iruserok() or deeper (_not_ ruserok() - 
this one tests by IP address).

--
>From the DOS/Windows95 perspective, memory management is one of the
strong points of Nintendo cartridges.   --Terry Lambert <terry@lambert.org>



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