i found telnetd.core in / directory of public access machine that works
stable for few months.

in logs i found lots (every few seconds) messages like
telnetd[9872]: ttloop:  peer died: No such file or directory

and lots of messages from inetd about connection to telnetd from many
different hosts.

is telnetd exploitable??! any protection?

NetBSD chylonia.3miasto.net 1.5.4_ALPHA NetBSD 1.5.4_ALPHA (local) #0: Thu
Nov 21 23:43:46 CET 2002
wojtek@chylonia.3miasto.net:/home/wojtek/kernel/local i386


binaries were compiled less than month ago from release-1-5 cvs