Internet restriction / parental control

[piezomotor]

Hi, I refer to this forum: http://forum.x-wrt.org/index.php/topic,403.0.html

I would like to adapt this Internet restriction / parental control to my WL-500gP.

They were having such scripts:
control-internet.sh

#!/bin/sh
###########################################################
# Control access from the LAN to the Internet (WAN)
#
# This script must be adapted to your configuration to fit your needs
# It can be used in a cron job or by the Webif^2 page Misc/Restrictions
#
# Usage: control-internet.sh [status|open|close|explain]
#	status	Returns 0 if traffic is allowed to the Internet
#	open	Open traffic to the Internet
#	close	Block traffic to the Internet
#	explain	Print info on stations blocked
#
# Author: Pierre Métras <p.metras@videotron.ca>
###########################################################

case "$1" in
	"status")
		status=$(/usr/sbin/iptables -nvL | grep "DROP" | grep "192.168.1.3")
		if [ "$status" = "" ]; then
			exit 0
		else
			exit 1
		fi
	;;
	
	"explain")
		# Print information on blocked workstations
		echo "192.168.1.3 (archibald) 192.168.1.4 (esmeralda)"
		exit 0
	;;
	
	"open")
		# Drop all rules blocking Internet access
		/usr/sbin/iptables -D forwarding_rule -s 192.168.1.3 -j DROP 2> /dev/null
		/usr/sbin/iptables -D forwarding_rule -d 192.168.1.3 -j DROP 2> /dev/null
		/usr/sbin/iptables -D forwarding_rule -s 192.168.1.4 -j DROP 2> /dev/null
		/usr/sbin/iptables -D forwarding_rule -d 192.168.1.4 -j DROP 2> /dev/null
		exit 0
	;;
	
	"close")
		# Add iptables rules to block Internet traffic
		
		# If cutter package installed, then cut active connections
		# cutter: http://www.lowth.com/cutter/
		if [ -x /usr/sbin/cutter ]; then
			/usr/sbin/cutter 192.168.1.3 2> /dev/null
			/usr/sbin/cutter 192.168.1.4 2> /dev/null
		fi
		                
		/usr/sbin/iptables -I forwarding_rule -s 192.168.1.3 -j DROP 2> /dev/null
		/usr/sbin/iptables -I forwarding_rule -d 192.168.1.3 -j DROP 2> /dev/null
		/usr/sbin/iptables -I forwarding_rule -s 192.168.1.4 -j DROP 2> /dev/null
		/usr/sbin/iptables -I forwarding_rule -d 192.168.1.4 -j DROP 2> /dev/null
		exit 0
	;;
	
	*)
		echo "Usage: $0 [status|open|close]"
		echo "	status	Status of bridge to the Internet (0 = open)"
		echo "	open	Open traffic to the Internet"
		echo "	close	Block traffic to the Internet"
		echo "	explain	Print information on blocked hosts"
	;;
esac

and also it would be nice to add an extra html internet control page:
misc-restrictions.sh

#!/usr/bin/webif-page
<?
###################################################################
# Internet Access Restrictions
#
# Description:
#	Allow or restrict Internet access.
#
#	Call the user customized script /etc/control-internet.sh
#	with the arguments "open", "close", "status" or "explain"
#	to allow or not access to the Internet.
#
# Author(s) [in order of work date]:
#	Pierre Metras <p.metras@videotron.ca>
#
# Major revisions:
#	v1	Initial release
#	v2	Better use of Webif controls
#		Explain which hosts are controlled
#
# NVRAM variables referenced:
#	None
#
# Configuration files referenced:
#	None
#
# Satelite file:
#	/etc/control-internet.sh must be adapted by the user to her
#	network configuration.
###################################################################

. /usr/lib/webif/webif.sh

header "Misc" "Restrictions" "@TR<<Restrictions>>" '' "$SCRIPT_NAME"

# Name of the satelite script
CONTROLINTERNET=/etc/control-internet.sh

# Initial Internet bridge status
################################
$CONTROLINTERNET status
status=$?

# Execute open/close action
###########################
case "$FORM_action" in
	close)
		if [ "$status" -eq "0" ]; then
			$CONTROLINTERNET close
		fi
	;;
	
	open)
		if [ "$status" -eq "1" ]; then
			$CONTROLINTERNET open
		fi
	;;
esac
        
explain=$($CONTROLINTERNET explain)

# New Internet bridge status
############################
$CONTROLINTERNET status
status=$?
if [ "$status" -eq "0" ]; then
	statusmsg="@TR<<Internet access is currently open...>>"
	selected="close"
else
	statusmsg="@TR<<Internet access is currently closed...>>"
	selected="open"
fi

# Display form
##############
display_form <<EOF
formtag_begin|controlinternet|$SCRIPT_NAME
start_form|@TR<<Internet Access>>
field|@TR<<Hosts>>
string|$explain
field
caption|$statusmsg
field|@TR<<Action>>
radio|action|$selected|close|@TR<<Close>>
radio|action|$selected|open|@TR<<Open>>
string|&nbsp;<input type="submit" value="@TR<<Submit>>" />
helptext|Internet-restriction#Select (Close) or (Open) buttons to allow or restrict Internet access.<br />You must adapt the file '$CONTROLINTERNET' to your configuration. Click the link below to edit this file.
helplink|http://$(nvram get lan_ipaddr)/cgi-bin/webif/system-editor.sh?path=/etc&amp;edit=$CONTROLINTERNET
end_form
formtag_end
EOF

footer

?>
<!--
##WEBIF:name:Misc:100:Restrictions
-->

I did some adjustments to the above files and it looks like cron works. I can not ping the archibald or esmeralda but I can ping my ASUS.

The problem here is the cutter. Now my question would be how to install it?

Any help appreciated.

Thanks.