Re[2]: SYN floods (was: does history repeat itself?)

Alexis Rosen writes:

Also true. As I said before, I don't know about the Ascends, but I do know
that the Xylogics boxes we use have the capability but probably not the
capacity. When all ports are connected at 28.8, CPU usage can hover in
the high 80% range. Adding filters would probably be a bad idea.

Yes, packet filters would certainly be a Bad Idea[tm].

That's why I was talking about filtering at a router just upstream from
the dial-access box.

FWIW, even with a thousand very busy modems, I'm pretty sure that even a
small cisco is up to the job. They just don't generate all that much traffic.

Could be, although I'd want to see this before I bet the farm on it.
I'm not sure how efficient crisco's filtering algorithm is...