*BSD News Article 63712


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From: eric@pandora.enet.net (Eric J. Schwertfeger)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Identd looping?
Date: 13 Mar 1996 06:37:03 -0000
Organization: Pandora (Private unix system)
Lines: 24
Message-ID: <4i5qef$cen@pandora.enet.net>
References: <Dn6KIn.7nA@ritz.mordor.com> <yfgag26q3ky.fsf@time.cdrom.com> <DnD7ry.M0C@ritz.mordor.com> <4homlq$lvi@news.aros.net>
NNTP-Posting-Host: pandora.enet.net
X-Newsreader: TIN [UNIX 1.3 950515BETA PL0]

Dave Andersen (angio@fluffy.aros.net) wrote:
: Chris Mauritz (ritz@ritz.mordor.com) wrote:
: : Jordan K. Hubbard (jkh@time.cdrom.com) wrote:
: : : In article <Dn6KIn.7nA@ritz.mordor.com> ritz@ritz.mordor.com (Chris Mauritz) writes:
: : : 
: : :    Is anyone else having problems with in.identd on FreeBSD 2.1R?
: : :    From time to time, I'll see the system load skyrocket and note
: : :    that 10-20 copies of in.identd are looping and chewing up cpu
: : : 
: : : I've also seen this at another FreeBSD site that uses identd.
: : : Looks like a bug!
: 
:   To make the thought a bit plicker, it also happens under Linux.  It's 
: taken down our linux shell machine before, and was doing so on a regular 
: basis until we disabled identd.  I was kinda hoping our FreeBSD boxes 
: wouldn't succumb to it, since we're opening up one for shell accounts now.
: 
:   Anyone have any more information about this?

Something that can cause this is if you identd a lot of services, and the
machine you're querying via identd tries to gather info about who identd's
its users, so it uses finger or something else you identd, which causes you
to identd again, and the loop goes on.  I've never experienced this, but it's
mentioned in both the books on Internet security that I've read.