ip_conntrack

#!/bin/sh
#
# ip_conntrack: Plugin to monitor the number of tracked connection

if [ "$1" = "config" ]; then
	echo "graph_title Number of tracked connections"
	echo "graph_args --base 1000"
	echo "graph_vlabel connections"
	echo "graph_category network"
	echo "connection.label connections"
	echo "connection.type DERIVE"
	echo "connection.min 0"
	echo "connection.max 100000"
	exit 0
fi;

echo -n "connection.value "
cat /proc/sys/net/ipv4/netfilter/ip_conntrack_count