On Friday 17 December 2010 at 12:53 (CET), Ruben Laban wrote:
> I'm trying to figure out if it's possible, and if so: how, to classify
> packets as inbound or outbound based on the "actual" direction the packet
> flows and thus not relying on the source/destination ip address in the
> packet. In dynamically routed networks, a given (super)subnet can exist on
> more than one leg of a router. One could somehow tie the dynamic routing
> data into pmacct by updating the aggregrate_filter settings when the
> topology changes. This doesn't strike as a very decent or even scalable
> solution though. Based on my searches on the web, it seems (lib)pcap
> throws away any directional data before passing it on to the program using
> the data. Another thought that crossed my mind was the use of the
> source/destination mac address. But again, this doesn't scale well (even
> though I only monitor transport interfaces which tend to have a /29 or /28
> configured (and multiple /24s routed over them)).
> I'm hoping there's a more elegant solution though. So if anyone has any
> ideas/pointers, I'm all ears (well, eyes).

While scouring the web some more, I found that uacctd might be a decent 
"alternative" to pmacctd. However documentation uacctd is quite sparse or 
quite well hidden. Are there any plans to improve/extend its documentation 
and/or make it easier to find?

Regards,
Ruben Laban

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