iptables

Hello,

I'm French, I'm sorry for my bad english.

I'm a beginner debian user.

In my home network, I have a linux machine with debian6.

My debian has to do dhcp server with isc-server.

I have 2 network card, eth0 = public Ip (adsl modem)

eth1 = lan.

My dhcp server runs.

But I can't connect to internet with pc's.

Description :

 

network  : 10.20.30.0

mask : 255.255.255.0

Windows server: 10.20.30.2

Linux server (Debian6) : 10.20.30.1 (DHCP a    nd gateway to wan)

Accesspoint Wifi : 10.20.30.3

NAS server : 10.20.30.4

MAO PC: 10.20.30.5

laptop : 10.20.30.6

IP phone : 10.20.30.7, 10.20.30.8, 10.20.30.9

I can connect to lan machines but not to wan.

 

cat /proc/sys/net/ipv4/ip_forward is 1
 

What are routes I have to create with route command ?

How can I routed 80 port to 10.20.30.1  with iptables ?

thank you for your help !

 

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