Date: 23 Jul 1999 12:13:15 +0200 From: Dag-Erling Smorgrav <des@flood.ping.uio.no> To: Andre Albsmeier <andre.albsmeier@mchp.siemens.de> Cc: Brian Feldman <green@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/usr.sbin/inetd builtins.c inetd.h Message-ID: <xzpr9lzbrno.fsf@flood.ping.uio.no> In-Reply-To: Andre Albsmeier's message of "Fri, 23 Jul 1999 11:28:12 %2B0200" References: <199907222111.OAA65792@freefall.freebsd.org> <19990723112812.A3847@internal>
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Andre Albsmeier <andre.albsmeier@mchp.siemens.de> writes:
> While you are so busy with inetd the last time (thanks, btw)
> I observed some kind of denial of service on -STABLE: I was
> playing with the new nmap and did a 'nmap -sU printfix'.
For those not familiar with nmap, this is a UDP scan:
-sU UDP scans: This method is used to determine which
UDP (User Datagram Protocol, RFC 768) ports are
open on a host. The technique is to send 0 byte
udp packets to each port on the target machine. If
we receive an ICMP port unreachable message, then
the port is closed. Otherwise we assume it is
open.
DES
--
Dag-Erling Smorgrav - des@flood.ping.uio.no
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