#!/bin/bash echo "Iniciando Firewall..." iptables=/sbin/iptables modprobe=/sbin/modprobe echo 1 > /proc/sys/net/ipv4/ip_forward echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts echo "Carregando Modulos" $modprobe ip_tables $modprobe iptable_filter $modprobe iptable_nat $modprobe ip_nat_ftp $modprobe ip_conntrack $modprobe ip_conntrack_ftp
$iptables -t filter -P INPUT ACCEPT $iptables -t filter -P OUTPUT ACCEPT $iptables -t filter -P FORWARD ACCEPT $iptables -F INPUT $iptables -F OUTPUT $iptables -F FORWARD echo "Iniciando Navegacao" $iptables -A OUTPUT -o eth0 -j ACCEPT $iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE $iptables -A FORWARD -i eth0 -j ACCEPT $iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT echo "Iniciando Anti-Spoofing" $iptables -A INPUT -s 172.16.0.0/16 -i eth1 -j DROP $iptables -A INPUT -s 10.0.0.0/8 -i eth1 -j DROP $iptables -A INPUT -s 192.168.0.0/24 -i eth1 -j DROP echo "Iniciando Redirecionamento de Portas" echo "Redirecionamento de Portas" $iptables -t nat -A PREROUTING -p tcp -s 0/0 -d IP_da_internet --dport 1024 -j DNAT --to IP_microsiga Assinantes em 27/12/2002: 2259 Mensagens recebidas desde 07/01/1999: 195029 Historico e [des]cadastramento: http://linux-br.conectiva.com.br Assuntos administrativos e problemas com a lista: mailto:[EMAIL PROTECTED]
