File pnp4nagios-xinetd.sample.conf of Package pnp4nagios
# Configuration for pnp4nagios
#
# Please add the port to your /etc/services file.
# cps limits the incoming requests to 150 per seconds - afterwards it waits for 10 seconds.
#
service pnp
{
disable = yes
type = UNLISTED
socket_type = stream
protocol = tcp
port = 5669
wait = no
user = nagios
cps = 150 10
server = /usr/lib/nagios/plugins/process_perfdata.pl
server_args = --inetd
}