Tracking stealth portscan/pepsi attacks

> As a side note, does anybody use anything to prevent address spoofing in their
> network? That would at prevent a lot of attacks completly and make tracing the
> rest much easier.
> 
> --
> Leigh

I think that a serious provider *should* prevent address spoofing. This is a 
simple filter in the access router.

If this is not done, how can an ISP prove that a customer has done something 
wrong. I think this for protection of the ISP as well as other customers.


Fredrik Johansson