[4082] in linux-net channel archive
Re: shell/tcp server failling(looping)
daemon@ATHENA.MIT.EDU (Rob McKee)
Sat Aug 17 12:50:12 1996
Date: Sat, 17 Aug 1996 08:49:42 -0700 (PDT)
From: Rob McKee <Imcom@imcom.com>
To: Klaus Lichtenwalder <klaus@gaston.m.isar.de>
cc: linux-net@vger.rutgers.edu
In-Reply-To: <Pine.LNX.3.94.960817150013.739C-100000@gaston.m.isar.de>
Thanxs Klaus;
Now I have to read through inetd source to find out when it
starts reaccepting requests at the port. Since this this is a production
(IE: public accessable) machine I have to be lenient to a degree. I might
have to hack inetd to restart accepting requests after a specified time.
maybe a wait.<count>.<restart> type interface.
wait
(wait, <default>, <disable [at least that's what the
default seems to be.]>)
wait.300
(wait, 300 connects max min, <disable [at least
that's what the default seems to be.]>)
wait.300.300
(wait, 300 connects max a minute, if declared dead --
restart in 300 seconds)
wait..300
(wait, <default>, 300 seconds..)
PS: I'm not subscribed to linux-net just linux-kernel
--
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# The best defense is not to have a hay seed for a president
On Sat, 17 Aug 1996, Klaus Lichtenwalder wrote:
> On Sat, 17 Aug 1996, Rob McKee wrote:
>
> Reading the manpage of inetd in the new NetKit 0.7 explains how to do
> it: after [no]wait you may append a `.' and the number of how many
> invocations per minute you will allow. Default is 40.
>
> Klaus
> >
> > I believe it does.. reading news via nntp and using the movement key to
> > fly by spamming definately triggers it. I have to killall -15 inetd and
> > restartit.
> >
> > >
> > > SunOS's inetd protected itself from runaway TCP clients bombing it
> > > with connect requests by declaring a service dead if it got over
> > > 40 requests / minute. A later patch from Sun (talking 4.1.x, heh)
> > > allowed invocation of inetd -r nn ss where nn was number of connect
> > > requests and ss was time frame. Don't know if Linux inetd has same
> > > mechanism of self-defense, your script might well trigger it.
> > >
> > > --alessandro
> > >
> >
>
> ________________________________________________________________________
> Klaus Lichtenwalder, Dipl. Inform., PGP Key: email to key@Four11.com
> Lichtenwalder@ACM.org, http://www.wp.com/Klaus, fax: +49-89-98292755
> Check out Oregon vs. Schwartz: http://www.lightlink.com/spacenka/fors
>
