iptables -t nat -I PREROUTING -i eth0 -d 200.201.174.0/24 -p tcp --dport 80 -j REDIRECT --to-port

iptables -t nat -A PREROUTING -i eth0 -d internetcaixa.caixa.gov.br -p tcp --dport 80 -j ACCEPT
iptables -t nat -A PREROUTING -i eth0 -d www.caixa.gov.br -p tcp --dport 80 -j ACCEPT
iptables -t nat -A PREROUTING -i eth0 -d www1.caixa.gov.br -p tcp --dport 80 -j ACCEPT
iptables -t nat -A PREROUTING -i eth0 -d cmt.caixa.gov.br -p tcp --dport 80 -j ACCEPT

iptables -I FORWARD -p tcp --dport 80 -s 192.168.0.0/24 -d 200.201.174.0/24 -j ACCEPT

iptables -I FORWARD -p tcp --dport 21 -d 200.201.174.207 -j ACCEPT
iptables -I FORWARD -p tcp --dport 80 -d 200.201.174.207 -j ACCEPT
iptables -I FORWARD -p tcp --dport 20001:20005 -s 200.201.174.207 -j ACCEPT
iptables -I FORWARD -p tcp --dport 20000:20019 -d 200.201.174.207 -j ACCEPT
iptables -I FORWARD -p tcp -s 200.201.174.207 -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -t nat -I PREROUTING -d 200.201.174.207 -j ACCEPT
iptables -t nat -I PREROUTING -s 200.201.174.207 -j ACCEPT
iptables -A INPUT -i eth1 -p udp -s 200.201.174.207 -j ACCEPT
iptables -A INPUT -i eth0 -p udp -s 200.201.174.207 -j ACCEPT
iptables -A OUTPUT -p tcp --destination-port 2631:2631 -j ACCEPT
iptables -A INPUT -p tcp --destination-port 2631:2631 -j ACCEPT