Howto Make Gateway with iptables?

Howto Make Gateway with iptables?

[Mojgan Masroor]

Hi, 
 I have a linux redhat9.0 - I want to create an gateway between our 
sections  and central site. 
It have 4 ethernet cards. 2 cards for internal LANs with 2 invalid sunbet 
192.168.101.x and 192.168.102.x range. 3th card for intranet use such connect 
to our web-server or email-server, 4th card for internet connection and when 
they want go to internet.i want also close all extra ports and close udp + 
icmp protocols. 
How i could do this with IPTABLES Rules? Anybody have such this schema? 
Any help would be appriciated 

thanks a lot, 
mojgan 

Re: Howto Make Gateway with iptables?

[Antony Stone]

On Wednesday 10 March 2004 7:35 am, Mojgan Masroor wrote:

> Hi,
>  I have a linux redhat9.0 - I want to create an gateway between our
> sections  and central site.
> It have 4 ethernet cards. 2 cards for internal LANs with 2 invalid sunbet
> 192.168.101.x and 192.168.102.x range. 3th card for intranet use such
> connect to our web-server or email-server, 4th card for internet connection
> and when they want go to internet.i want also close all extra ports and
> close udp + icmp protocols.
> How i could do this with IPTABLES Rules? Anybody have such this schema?
> Any help would be appriciated

Oskar Andreasson's netfilter tutorial at 
http://iptables-tutorial.frozentux.net should tell you most, if not all, of 
what you need to know.

If you have any specific questions after getting as far as you can with that, 
feel free to come back and ask here.

Regards,

Antony.

-- 
"The joy of X!!??  I've always hated compiling graphical shite.  You have a 10 
line program, and it ends up depending on the entire known universe."

 - Philip Hands

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