Re: iptables

Hi,

Thank you for lot of reply

Wan protocole is IPoA. So I think I can keep eth0 ?

On my debian server, I have dhcp server (isc-dhcp-server), asterisk, apache, samba.

On my windows server, I have ftp server,, sam broadcaster...

I will try to route as you explain to me, and I will tell you later.

Thank you again

----- Original Message -----

From: Eden Caldas

To: Javier Charne

Cc: debian-firewall@lists.debian.org

Sent: Wednesday, June 22, 2011 10:53 PM

Subject: Re: iptables

Since it's a dsl maybe the interface is ppp0 ? Check if this interface comes up when you dial in.

Eden Caldas
Consultor de TI
eden@linuxfacil.srv.br
(81) 9653 7220
LINUX FÁCIL – Consultoria e Serviços em TI

2011/6/22 Javier Charne <javierch@speedy.com.ar>

El 22/06/11 17:19, Manu escribió:

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 !

Manu:

Check if 10.20.30.1 is default gateway for all devices in LAN.

In Debian Server, traffic to Internet must be nated:

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

Javier.-