Re: [long] Re: DDoS: CAR vs TCP-Intercept vs NetFlow

[Paul Ferguson <ferguson () cisco com>]

At 11:15 PM 02/28/2000 -0500, Richard Steenbergen wrote:

> Be careful with flow when dealing with random src or random dst (for
> example, an attack which elicits a victim system to send replies to random
> destinations) attacks, or it may not help you much (as the flow cache gets
> max'd).

Just like they say about vitamin fortified cereals, "it's in there".

The flow-switching creature features have enough functionality to
trace an attacker back to its source. Yes, its painful. Yes, it has
to be done in real-time. Yes, actually, it has been done before. No,
there is no other real way to do it.

People: Start source filtering so we can get beyond these inane
discussions.

- paul