[31471] in bugtraq
Re: Re[2]: 11 years of inetd default insecurity?
daemon@ATHENA.MIT.EDU (Paul Szabo)
Mon Sep 8 16:11:27 2003
Date: Tue, 9 Sep 2003 05:11:12 +1000 (EST)
From: psz@maths.usyd.edu.au (Paul Szabo)
Message-Id: <200309081911.h88JBCY201696@milan.maths.usyd.edu.au>
To: 3APA3A@SECURITY.NNOV.RU
Cc: bugtraq@securityfocus.com
3APA3A <3APA3A@SECURITY.NNOV.RU> wrote:
>>> -R 0 -s your_ad_can_be_here
>
>> Your cure is worse than the disease: rate limiting allows a DoS
>> against the service, no limit allows a DoS against the whole
>> machine.
>
> -s limits number of processes invoked from same IP. You can additionally
> use -c to prevent distributed attack. It doesn't allow to DoS box and
> doesn't disable service for 10 minutes.
Note that my (DEC/Compaq/HP Tru64) inetd does not have -c or -s options.
The only safe way is to use a sensible -R and tcp_wrappers. Or upgrade to
Linux and xinetd...
Cheers,
Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
School of Mathematics and Statistics University of Sydney 2006 Australia
