[netflow-tools] flowd-reader export

Yann Berthier yb at bashibuzuk.net
Wed Mar 29 00:45:51 EST 2006

On Tue, 28 Mar 2006, at 14:00, Florian Weimer wrote:

> * Murray Shields:
> > Makes sense to me. Any holes in this logic?
> It might be a very long connection which results in multiple flows.
> In this case, the first packet in the two flows is not sent by the
> client.
> In general, it is quite difficult to reconstruct the roles without TCP
> flags export (and the way it is done by some vendors is not really
> helpful, either).

   Even when you are lucky enough to have the flags, it not that
   helpful: as flags are ORed, you end up for a 'complete' tcp
   'session' with both uni-directional flows having at least SAF set -
   no way to distinguish the client (in an ip sense) from the server

   Or do i minsunderstand you ?

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