[HaBo]

if [ "$1" = "autoconf" ]; then
        if ( cat /proc/net/ip_conntrack 2>/dev/null >/dev/null ); then
                echo yes
                exit 0
        else
                if [ $? -eq 127 ]
                then
                        echo "no (ipconntrack not found)"
                        exit 1
                else
                        echo no
                        exit 1
                fi
        fi
fi

if [ "$1" = "config" ]; then

        echo 'graph_title ipconntrack'
        echo 'graph_args -l 0 --base 1000'
        echo 'graph_vlabel established connections'
        echo 'graph_category network'
        echo 'forward.label forward'
        echo 'forward.type GAUGE'
        echo 'forward.max 500'''
        echo 'local.label local'
        echo 'local.type GAUGE'
        echo 'local.max 500'''
        exit 0
fi

cat /proc/net/ip_conntrack | grep ESTABLISHED | sed 's/.*src=\(.*\) .*dst=\(.*\) sport.*src=\(.*\) .*dst=\(.*\) spo.*/\1 \2 \3 \4/g' | awk 'BEGIN {{FORW=0} {LOCAL=0}} {if($1 != $4){ FORW += 1} else { LOCAL += 1}} END {{print "forward.value "FORW} {print "local.value "LOCAL}}'