QOS com Iptables
Publicado por Júlio César Mauro 24/10/2005
[ Hits: 24.909 ]
Este script tem a funcao de limitar a banda do usuario em 1/4 da banda
especificada na variavel RATEUP. Caso a banda total nao esteja sendo utilizado,
o usuario que estiver utilizando o sistema, pode utilizar a banda total
#!/bin/sh
#chkconfig: 2345 11 89
# Autor: Julio Cesar Mauro <julio.mauro<at>gmail.com
# Data: 23/10/2004
# Versao: 1.0
# Descricao: Este script tem a funcao de limitar a banda do usuario em 1/4 da banda
# especificada na variavel RATEUP. Caso a banda total nao esteja sendo utilizado,
# o usuario que estiver utilizando o sistema, pode utilizar a banda total.
. /etc/rc.d/init.d/functions
. /etc/sysconfig/network
[ ${NETWORKING} = "no" ] && exit 0
DEV=eth0
RATEUP=256
RATEDN=700
IPT="/sbin/iptables"
TC="/sbin/tc"
HOSTS="172.16.24.0/24"
case "$1" in
start)
################################################################################################
# Add HTB root qdisc
$TC qdisc add dev $DEV root handle 1: htb default 26 2> /dev/null > /dev/null
$IPT -A FORWARD -t mangle -p udp --sport 1024:49151 -j TOS --set-tos Maximize-Throughput
$IPT -A FORWARD -t mangle -p udp --dport 1024:49151 -j TOS --set-tos Maximize-Throughput
$IPT -A FORWARD -t mangle -p tcp --sport 1:65535 -j TOS --set-tos Minimize-Delay
$IPT -A FORWARD -t mangle -p tcp --dport 1:65535 -j TOS --set-tos Minimize-Delay
# Adiciona root qdisc
$TC qdisc add dev $DEV root handle 1: htb default 50 2> /dev/null > /dev/null
$TC class add dev $DEV parent 1: classid 1:1 htb rate ${RATEUP}kbit 2> /dev/null > /dev/null
# Classes #
$TC class add dev $DEV parent 1:1 classid 1:20 htb rate $[$RATEUP/4]kbit ceil ${RATEUP}kbit prio 0 2> /dev/null > /dev/null
# Sqf #
$TC qdisc add dev $DEV parent 1:20 handle 20: sfq perturb 10 2> /dev/null > /dev/null
# Filtros #
$TC filter add dev $DEV parent 1:0 prio 0 protocol ip handle 20 fw flowid 1:20 2> /dev/null > /dev/null
$TC filter add dev $DEV parent 1:0 protocol ip prio 0 u32 match ip dst $HOSTS classid 1:20 2> /dev/null > /dev/null
# Marca pacotes #
$IPT -A FORWARD -t mangle
$IPT -A PREROUTING -t mangle -d 172.16.24.0/24 -j MARK --set-mark 1
$IPT -t nat -I POSTROUTING -s 172.16.24.0/24 -d 0/0 -o $DEV -j MASQUERADE
$IPT -A FORWARD -t mangle -p tcp --dport 1:65535 -j MARK --set-mark 23
$IPT -A FORWARD -t mangle -p tcp --sport 1:65535 -j MARK --set-mark 23
$IPT -A FORWARD -t mangle -p icmp -j MARK --set-mark 20
$IPT -A FORWARD -t mangle -p udp -j MARK --set-mark 21
$IPT -A FORWARD -t mangle -m mark --mark 0 -j MARK --set-mark 26
echo "Adicionado Regras de QoS:" ;
;;
#################################################################################################
stop)
$TC qdisc del dev $DEV root 2> /dev/null > /dev/null
$IPT -D FORWARD -t mangle -p udp --sport 1024:49151 -j TOS --set-tos Maximize-Throughput
$IPT -D FORWARD -t mangle -p udp --dport 1024:49151 -j TOS --set-tos Maximize-Throughput
$IPT -D FORWARD -t mangle -p tcp --sport 1:65535 -j TOS --set-tos Minimize-Delay
$IPT -D FORWARD -t mangle -p tcp --dport 1:65535 -j TOS --set-tos Minimize-Delay
$IPT -D FORWARD -t mangle
$IPT -D FORWARD -t mangle -p tcp --dport 1:65535 -j MARK --set-mark 23
$IPT -D FORWARD -t mangle -p tcp --sport 1:65535 -j MARK --set-mark 23
$IPT -D FORWARD -t mangle -p icmp -j MARK --set-mark 20
$IPT -D FORWARD -t mangle -p udp -j MARK --set-mark 21
$IPT -D FORWARD -t mangle -m mark --mark 0 -j MARK --set-mark 26
echo "Removendo Regras de QoS:" ;
;;
#################################################################################################
status)
echo "[qdisc]"
$TC -s qdisc show dev $DEV
echo "[class]"
$TC -s class show dev $DEV
echo "[filter]"
$TC -s filter show dev $DEV
exit
;;
*)
echo "Usage: qos {start|stop|restart|status}"
exit 1
esac
# EOF #
##################################################################################################
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