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Hi, all
I have a Linux box with RedHat 9.0 installed(eth0:218.xxx.xxx,eth1:192.168.0.1), this box is a firewall&proxy. Now I want external user can access my internal web server via the firewall box.
According to RedHat 9.0's manual and the posts in internet, I used the following command.
you need some forward rules, for instance
iptables -A FORWARD -m state --state NEW -i eth0 -p tcp --dport 80 -j ACCEPT
to accept & forward packets sent to the router
and (for instance):
iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
for forwarding packets sent back from internal http server to the external box
But to make forwarding active you also have to do:
echo 1 > /proc/sys/net/ipv4/ip_forward
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