Tee packets

[Miroslav Lachman]

Stephen Clark wrote:

> Hello List,
> 
> We have a monitoring app that receives udp packets from units in the 
> field. We are in
> the process of increasing the number of units we have reporting and are 
> seeing some
> performance issues with our current hardware. I would like be able to 
> somehow route a
> copy of each packet to another machine so I can test out different 
> hardware configurations
> to see how performance is affected.
> 
> Any ideas on the best way to do this?

If you are using PF as your firewall, you can use dup-to (man pf.conf)

"The dup-to option creates a duplicate of the packet and routes it
like route-to.  The original packet gets routed as it normally would."

Miroslav Lachman