[mrtg] separating WAN traffic from LAN traffic
Dan.McDonald at austinenergy.com
Mon Jan 5 19:16:47 CET 2009
On Mon, 2009-01-05 at 17:36 +0100, Joel Uckelman wrote:
> I have an interface for which I'd like to graph only the traffic to and from
> the WAN, and ignore the traffic to and from the LAN. Graphing the total (LAN
> + WAN) traffic is useless for me, as I don't care about traffic on the LAN.
> I only have SNMP access to my own box, not the router it sits behind, so
> asking the router for this information is not possible. I do know exactly
> which IPs are on the LAN, however, so I can determine locally what traffic
> will go out to the WAN and what traffic is coming in form the WAN.
Most people who try that sort of thing write iptable rules and measure
the hits on those rules.
The alternative is netflow, or some sort of rmon probe. Those solutions
Daniel J McDonald, CCIE #2495, CISSP #78281, CNX
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