Marcelo Lopes Santana

#Apaga a classe root.
 tc qdisc del root dev eth0

##Criação das classes em eth0
 tc qdisc add dev eth0 root handle 1: htb default 30

##Definicao das classes filhas
 tc class add dev eth0 parent 1: classid 1:1 htb rate 1000kbit ceil 1000kbit
 tc class add dev eth0 parent 1:1 classid 1:10 htb rate 700kbit ceil 1000kbit prio 1
 tc class add dev eth0 parent 1:1 classid 1:20 htb rate 200kbit ceil 1000kbit prio 2
 tc class add dev eth0 parent 1:1 classid 1:30 htb rate 100kbit ceil 1000kbit prio 3

##Otimiza a disputa das filas com sqf
 tc qdisc add dev eth0 parent 1:10 handle 10: sfq quantum 1514 perturb 10
 tc qdisc add dev eth0 parent 1:20 handle 20: sfq quantum 1514 perturb 10
 tc qdisc add dev eth0 parent 1:30 handle 30: sfq quantum 1514 perturb 10

#Marca pacotes
 iptables -t mangle -A PREROUTING -p tcp -m multiport –dport 443,25,110 -j MARK –set-mark 1
 iptables -t mangle -A PREROUTING -p tcp -m multiport –sport 443,25,110 -j MARK –set-mark 1

 iptables -t mangle -A PREROUTING -p icmp -d 189.84.20.51 -j MARK –set-mark 1
 iptables -t mangle -A PREROUTING -p icmp -s 189.84.20.51 -j MARK –set-mark 1
 iptables -t mangle -A PREROUTING -p udp -d 189.84.20.51 -j MARK –set-mark 1
 iptables -t mangle -A PREROUTING -p udp -s 189.84.20.51 -j MARK –set-mark 1
 iptables -t mangle -A PREROUTING -p tcp -d 189.84.20.51 -j MARK –set-mark 1
 iptables -t mangle -A PREROUTING -p tcp -s 189.84.20.51 -j MARK –set-mark 1

#Pacotes com tamanho até 60000 bytes em http na porta 80 tcp
 iptables -t mangle -A PREROUTING -p tcp -m tcp –dport 80 -m length –length 1:60000 -j MARK –set-mark 1
 iptables -t mangle -A PREROUTING -p tcp -m tcp –sport 80 -m length –length 1:60000 -j MARK –set-mark 1

#Pacotes icmp
 iptables -t mangle -A PREROUTING -p icmp -j MARK –set-mark 2
 iptables -t mangle -A PREROUTING -p udp -j MARK –set-mark 2

#Classifica os pacotes para caírem em suas respectivas classes criadas
 iptables -t mangle -A POSTROUTING -o eth0 -m mark –mark 1 -j CLASSIFY –set-class 1:10
 iptables -t mangle -A POSTROUTING -o eth0 -m mark –mark 2 -j CLASSIFY –set-class 1:20
 iptables -t mangle -A POSTROUTING -o eth0 -m mark –mark 3 -j CLASSIFY –set-class 1:30