Achei um tutorial de banlanceamento de links... gostaria de saber o que esta errado em minha configuracao... eu removi algumas regras do firewall... vo configura-las atraves do shorewall...

Segue o script:

#---------------------------- /etc/iproute2/rt_tables ------------------------
#
# reserved values
#
#255 local
#254 main
#253 default
#0 unspec

#
#local
#
#1 inr.ruhep
10 ipfixo
11 adsl1
30 adsl
#---------------------------- /etc/iproute2/rt_tables ------------------------


---------------------------- /etc/firewall/firewall.sh --------------------------
#!/bin/sh
######################################
# Firewall for ADSL Velox Telemar #
# By Leandro R. leandro@cesan.com.br #
# OBS: Balanceamento de trafego para #
# 2 links ADSL #
######################################

# Legenda
#
# eth0 -> Rede interna (192.168.254.254/24)
# eth1 -> ADSL (192.168.0.1/24)
# eth2 -> IPFIXO (xxx.xxx.xxx.97/27)

# Variaveis
#DNS1="200.202.93.75"
#DNS2="200.202.0.34"

# Carregando os modulos basicos:

#echo -n "Carregando os modulos..."
#modprobe ip_tables
#modprobe iptable_filter
#modprobe ip_conntrack
#modprobe ip_conntrack_ftp
#modprobe iptable_nat
#modprobe ip_nat_ftp
#modprobe ipt_LOG
#modprobe ipt_state
#modprobe ipt_MASQUERADE
#echo " [OK]"

# Resetando o Firewall:

echo -n "Resetando o firewall..."
iptables -F
iptables -Z
iptables -X

#iptables -t nat -F
#iptables -P INPUT DROP
#iptables -P FORWARD DROP
#iptables -P OUTPUT ACCEPT
#echo " [OK]"

# Habilitando o roteamento de pacotes:

echo -n "Habilitando o roteamento..."
echo "1" > /proc/sys/net/ipv4/ip_forward
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts

echo " [OK]"

# Liberando a chain INPUT para o localhost:

# echo -n "Liberando acesso do localhost..."
# iptables -A INPUT -p ALL -s 127.0.0.1 -i lo -j ACCEPT
# iptables -A INPUT -p ALL -s 192.168.0.1 -i lo -j ACCEPT
# iptables -A INPUT -p ALL -s 192.168.1.2 -i lo -j ACCEPT
# iptables -A INPUT -p ALL -s 192.168.2.2 -i lo -j ACCEPT
# echo " [OK]"

# Otimizando o firewall:

# echo -n "Otimizando o roteamento..."
# iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
# echo " [OK]"

# Liberando resposta dos servidores DNS:

# echo -n "Liberando servidores DNS..."
# iptables -A INPUT -p udp -s 192.168.0.0/24 --sport 53 -d $DNS1 -j ACCEPT
# iptables -A INPUT -p udp -s 192.168.0.0/24 --sport 53 -d $DNS2 -j ACCEPT
# echo " [OK]"

# DHCP Server

# echo -n "Liberando servidor DHCP..."
# iptables -A INPUT -p udp -s 192.168.0.0/24 --sport 79 -d 192.168.0.1 -j ACCEPT
# echo " [OK]"

# Descartar pacotes fragmentados:

# echo -n "Bloqueando pacotes fragmentados..."
# iptables -A INPUT -i eth1 -f -j LOG --log-prefix "Pacote fragmentado: "
# iptables -A INPUT -i eth1 -f -j DROP
# iptables -A INPUT -i eth2 -f -j LOG --log-prefix "Pacote Fragmentado: "
# iptables -A INPUT -i eth2 -f -j DROP
# echo " [OK]"

# Bloqueando ataques do tipo SPOOF de IP:

# echo -n "Bloqueando spoofing..."
# iptables -A INPUT -i eth1 -s 10.0.0.0/8 -j DROP
# iptables -A INPUT -i eth1 -s 172.16.0.0/12 -j DROP
# iptables -A INPUT -i eth1 -s 224.0.0.0/4 -j DROP

# iptables -A INPUT -i eth1 -s 240.0.0.0/5 -j DROP
# echo " [OK]"

# Liberando alguns acessos por ping:

# echo -n "Liberando acesso por ping..."
# iptables -A INPUT -p icmp --icmp-type 8 -i eth0 -j ACCEPT
# iptables -A INPUT -p icmp -s 192.168.0.0/24 -d 0/0 -j ACCEPT
# echo " [OK]"

# Regra para SSH: (opcional)

# echo -n "Liberando acesso ao SSH..."
# iptables -A INPUT -p TCP --dport 22 -j ACCEPT
# echo " [OK]"

# Regras do FORWARD

# Descarta pacotes invalidos:

# echo -n "Descartando pacotes invalidos para reenvio..."
# iptables -A FORWARD -m state --state INVALID -j DROP
# echo " [OK]"

# Mantendo conexoes ativas:

# echo -n "Manutencao de conexoes ativas..."
# iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
# echo " [OK]"

# Liberando acesso ao DNS para a rede interna (Email):

# echo -n "Liberando DNS para rede interna..."

# iptables -A FORWARD -s 192.168.0.0/24 -j ACCEPT

# iptables -A FORWARD -p udp -s 192.168.0.0/24 -d $DNS1 --dport 53 -j ACCEPT
# iptables -A FORWARD -p udp -s 192.168.0.0/24 -d $DNS2 --dport 53 -j ACCEPT
# iptables -A FORWARD -p udp -s $DNS1 --sport 53 -d 192.168.0.0/24 -j ACCEPT
# iptables -A FORWARD -p udp -s $DNS2 --sport 53 -d 192.168.0.0/24 -j ACCEPT
# echo " [OK]"

# Fazendo mascaramento de enderecos IP (NAO NAT):
# OBS: essa regra eh mutuamente excludente com a proxima, a do NAT
# ou seja, escolha uma das duas

echo -n "Habilitando o mascaramento..."
#iptables -t nat -A POSTROUTING -j MASQUERADE
iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE
iptables -t nat -A POSTROUTING -o eth2 -j MASQUERADE
echo " [OK]"

# Marcando pacotes

echo -n "Marcando pacotes..."
iptables -A PREROUTING -t mangle -s 192.168.254.0/24 -d 0/0 -j MARK --set-mark 3
echo " [OK]"

# Desabilitando o filtro de pacotes do martian source
echo -n "Desligando rp_filter..."
for eee in /proc/sys/net/ipv4/conf/*/rp_filter; do
echo 0 > $eee
done
echo " [OK]"

# Definindo regras de balanceamento de Link:
echo -n "Balanceando links..."

# ADSL #1
ip route add 192.168.0.0/24 dev eth1 src 192.168.0.1 table adsl1
#ip route add 192.168.0.0/24 via 192.168.0.1 table velox1
ip route add default via 192.168.0.254 table adsl1

# IPFIXO #2
ip route add xxx.xxx.xxx.96/27 dev eth2 src xxx.xxx.xxx.97 table ipfixo
#ip route add 192.168.0.0/24 via 192.168.0.1 table velox2
ip route add default via xxx.xxx.xxx.126 table ipfixo

# setando na tabela principal de roteamento
ip route add 192.168.0.0/24 dev eth1 src 192.168.0.1
ip route add xxx.xxx.xxx.96/27 dev eth2 src xxx.xxx.xxx.97


# setando a rota preferencial
ip route add default via 192.168.0.254

# regras das tabelas
ip rule add from 192.168.0.1 table adsl1
ip rule add from xxx.xxx.xxx.97 table ipfixo

# balanceamento de link
ip rule add fwmark 3 lookup adsl prio 3
ip route add default table adsl nexthop via 192.168.0.254 dev eth1 \
weight 1 nexthop via xxx.xxx.xxx.126 dev eth2 weight 1
#OBS: o comando assima deve ser digitado em uma só linha, ou
# usando o caractere \ para dividí-la.

# flush no roteamento
ip route flush cache
echo " [OK]"
sleep 3
#---------------------------- /etc/firewall/firewall.sh --------------------------


Alguem pode me ajudar????