Re: Spliting traffic between two NICs
From: 7 (website_has_email_at_www.ecu.pwp.blueyonder.co.uk)
Date: 09/20/04
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Date: Mon, 20 Sep 2004 15:30:20 GMT
martin wrote:
> Ladies and Gentlemen, Greetings and Felicitations!
> I don't want to know how to do this but where I should look to find
> the answer. For the life of me I can't find it, mostly (I think)
> because I don't know what the technical term for what I want to do is,
> and so I can't google for it.
>
> We have a bunch of servers on our network, each with one NIC in them,
> and a large number of thin clients connect to any of these servers. I
> want to add a second NIC to each server and route all Internet traffic
> (http) through one and everything else through the other. To put it
> another way any traffic to port 80 is to go to one NIC and traffic to
> any other port to the second NIC. I intend to send all internet
> traffic through a completely separate network at some stage and the
> first step is to split the traffic up. I know that it can be done I
> just don't know where to look to find out how.
Its funny, but I was thinking along similar lines to one of
my projects and we seen to have identical objectives.
Putting in two NICs into the PC is no problem - googling
on eth0 eth1 will spring up how to's on that.
You could use a standard router or IPCop distro
to route port 80 traffic to the network made up of 2nd NICs
so that the router services only the port 80 calls.
Configuring a box or writing a port forwarding program that forward port 80
and blocks all others, including filtering the incoming URL
to ensure it doesn't contain unwanted characters or excessive
length means the http servers would become more difficult to hack - that
was my thinking.
> We really only have three types of traffic; tftp (when the clients
> boot), X (when the clients are running) and internet (when the kids
> are surfing).
>
> We are using FC1, 2.4.22-1.
>
> many thanks!
>
> Martin Woolley
> ICT Support - Handsworth Grammar School
> sysadmin at handsworth dot bham dot sch dot uk
> Isis Astarte Diana Hecate Demeter Kali Inanna
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