basic firewall/NAT setup

I am somewhat of a newbie when it comes to configuring iptables.

I wish to set up my Debian box so that it is configured in the following
way:



ppp0------>Firewall (Packet Filter)------->eth0-------------> LAN

So the internet connection is firewalled and then shared across the network.
I have switched ip_forward on and i have manually typed in the command to
switch NAT on.
However i need the NAT and The packet filter to be switched on permantenly.
I also need a ruleset that will adquately protect my network.


If anyone can possible help it would be greatly appreciated.

Thanks
James Hastie

Check out this man, it contains simple ip tables script just to fit
your needs.
http://en.tldp.org/HOWTO/IP-Masquerade-HOWTO/
firewall-examples.html#RC.FIREWALL-2.4.X

spole

In article <(E-Mail Removed)>, James Hastie wrote:
> I am somewhat of a newbie when it comes to configuring iptables.
>
> I wish to set up my Debian box so that it is configured in the following
> way:
>
>
>
> ppp0------>Firewall (Packet Filter)------->eth0-------------> LAN
>
> So the internet connection is firewalled and then shared across the network.
> I have switched ip_forward on and i have manually typed in the command to
> switch NAT on.
> However i need the NAT and The packet filter to be switched on permantenly.
> I also need a ruleset that will adquately protect my network.
>
>
> If anyone can possible help it would be greatly appreciated.
>
> Thanks
> James Hastie
>
>