contrib-munin/plugins/system/blockhosts

#!/bin/sh
# Plugin to monitor the number of hosts denied by BlockHosts
#
# $Log$
# based on:
# denyhosts plugin
# Revision 1.0  2009/06/05 16:00:00 tjansson
#
# Modified by d.becker 2010/02/04
#
# Parameters:
#       config   (required)
#       autoconf (optional - used by munin-config)

LOG=/etc/hosts.allow

if [ "$1" = "autoconf" ]; then
        if [ -r "$LOG" ]; then
                echo yes
                exit 0
        else
                echo no
                exit 1
        fi
fi

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

        echo 'graph_title Hosts denied by BlockHosts'
        echo 'graph_args -l 0'
        echo 'graph_vlabel denied hosts '
        echo 'graph_category security'
        echo 'HostsDenied.label Hosts denied by BlockHosts'
        echo 'HostsWatched.label Hosts watched by BlockHosts'
	exit 0
fi

echo HostsDenied.value  `egrep -c " : deny" $LOG`
echo HostsWatched.value `egrep -c "#bh: ip:" $LOG`