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Re: Measuring network traffic on the same interface, to different nets

If you use iptables... set up explicit allow rules... for instance:

iptables -I INPUT 1 -s 202.a(network address) -i eth0 -j ACCEPT
iptables -I OUTPUT 1 -o 202.a(network address) -o eth0 -j ACCEPT
iptables -I OUTPUT 2 -o eth0 -j ACCEPT

This will setup the rules in the proper order, and you can reset the counters any time you wish, or write a script to collect/reset them and import them to an mrtg compatible file.


On Fri, 23 Aug 2002 13:04:01 +0800
"Sanjeev \"Ghane\" Gupta" <ghane@dotxtra.com> wrote:

> Folks,
> I am running SQUID for a client, in transparent mode, woody, 2.4.19.  The
> edge router sends all port 80 to me, I send out to the router on the same
> interface.  I can capture total traffic on the interface.  The users are on
> 202.a.x.y.
> What I need is a way to see:
>     Traffic on eth0 to and from 202.a
>     Traffic on eth0 to and from all other nets
> This way, I can clearly see what reduction in traffic is occuring.  I can
> get figures from SQUID, but these do not tally with the edge router's view,
> which shows practically no difference between incoming and outgoing on the
> port.  If SQUID is caching, outgoing should be more, as the SQUID acts as a
> source for some objects, right?
> Any way to do this?
> --
> Sanjeev
> -- 
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