[netflow-tools] pfflowd and core routing

[Damien Miller]

On Fri, 5 May 2006, Xavier Beaudouin wrote:

> I want to monitor using nfsen for example the flow I get on my  
> network with a minimal cpu overhead.
> 
> What is the minimal pf configuration to make to have full pfflowd  
> sending correct flows ?

pass all keep state

You might want to limit this to a particular NIC(s):

pass all on { em0, em1 } keep state