Shalom,
Internet services.
ftp
telnet
rlogin
things like that.
xinetd if you are familiar with Linux.
In general, I try and avoid using these services at all.
All can be replaced with more secure services.
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com