Date: Mon, 20 Nov 1995 10:20:12 -0600 (CST) From: Joe Greco <jgreco@brasil.moneng.mei.com> To: u923168@student.canberra.edu.au (Gasparovski / Daniel) Cc: hackers@freebsd.org Subject: Re: udp echo port Message-ID: <199511201620.KAA04756@brasil.moneng.mei.com> In-Reply-To: <Pine.SOL.3.91.951121014021.8514A-100000@student.canberra.edu.au> from "Gasparovski / Daniel" at Nov 21, 95 01:44:07 am
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> Hi, > > I just upgraded to 2.1 and noticed the following in /etc/inetd.conf: > > echo stream tcp nowait root internal > [...] > #echo dgram udp wait root internal > > Why is the TCP echo port enabled but the UDP echo port disabled? > > The reason I ask is because Slirp, a SLIP/PPP emulator, uses the UDP echo > port to emulate "ping" packets. Probably because people use it for electronic terrorism. (sigh) I don't know about the echo/udp port, but I've seen some other nifty abuses of the internal ports... ... JG
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