Untitled

#!/bin/bash

if [ "$#" -ne "4" ]; then
   echo "$0 <interafec> <rate> <ceiling> <latency>"
   echo
   echo "Example: $0 eth0 20kbps 35kbps 20ms"
   exit
fi

INTERFACE=$1
RATE=$2
CEIL=$3
LATENCY=$4

echo 1 > /proc/sys/net/ipv4/ip_forward

/sbin/iptables -F -t mangle
/sbin/iptables -F -t filter
/sbin/iptables -F -t nat
/sbin/tc qdisc del dev $INTERFACE root

tc qdisc add dev $INTERFACE root tbf rate $RATE burst 10kb latency $LATENCY peakrate $CEIL minburst 1540
iptables -A POSTROUTING -t nat -p tcp -o $INTERFACE -j MASQUERADE
iptables -A POSTROUTING -t nat -p udp -o $INTERFACE -j MASQUERADE
iptables -A POSTROUTING -t nat -p icmp -o $INTERFACE -j MASQUERADE