Boa tarde, instalei o slackware 10.1 e esta desse jeito
#Script Portas
#tcp
iptables -t nat -A PREROUTING -i ppp0 -p tcp --dport 50 -j DNAT --to 192.168.254.9:50
iptables -A FORWARD -p tcp -i ppp0 --dport 50 -d 192.168.254.9 -j ACCEPT
#udp
iptables -t nat -A PREROUTING -i ppp0 -p udp --dport 50 -j DNAT --to 192.168.254.9:50
iptables -A FORWARD -p udp -i ppp0 --dport 50 -d 192.168.254.9 -j ACCEPT
nao vai nem pro decreto o que pode ser?
esss o firewall
=============
pppoe-start
echo "1" > /proc/sys/net/ipv4/ip_forward
/sbin/modprobe iptable_nat
/sbin/modprobe ip_conntrack
/sbin/modprobe ip_conntrack_ftp
/sbin/modprobe ip_tables
/sbin/modprobe ipt_unclean
/sbin/modprobe ipt_limit
/sbin/modprobe ipt_LOG
/sbin/modprobe ipt_REJECT
/sbin/modprobe ip_nat_ftp
iptables -F
iptables -t nat -F
iptables -P FORWARD DROP
iptables -A INPUT -i lo -j ACCEPT
iptables -A OUTPUT -o lo -j ACCEPT
iptables -F -t mangle
#--- ativar net para eth1
iptables -A FORWARD -s 192.168.254.0/24 -d 0/0 -j ACCEPT
iptables -A FORWARD -s 0/0 -d 192.168.254.0/24 -mstate --state ESTABLISHED,RELATED -j ACCEPT
iptables -t nat -A POSTROUTING -s 192.168.254.0/24 -d 0/0 -j MASQUERADE
#Prioriza site
iptables -t mangle -A POSTROUTING -o eth1 -p tcp --dport 80 -j TOS --set-tos 16
iptables -t mangle -A POSTROUTING -o eth1 -p tcp --dport 3022 -j TOS --set-tos 16
iptables -t mangle -A POSTROUTING -o eth1 -p tcp --dport 25 -j TOS --set-tos 16
iptables -t mangle -A POSTROUTING -o eth1 -p tcp --dport 110 -j TOS --set-tos 16
#-- Proxy
squid start
named
#Redirecionamento de portas
portas
#Redireciona nat para proxy para as redes
iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j REDIRECT --to-port 8080