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Re: SYN floods (was: does history repeat itself?)
- From: Vektor Sigma
- Date: Mon Sep 09 21:29:59 1996
On Mon, 9 Sep 1996, Perry E. Metzger wrote:
> I think its time for the larger providers to start filtering packets
> coming from customers so that they only accept packets with the
> customer's network number on it.
> Yes, its a load on routers. Yes, its nasty for the mobile IP weenies.
> Unfortunately, the only known way to stop this.
On my private network I can send 600 or more SYN packets to my telnet port
(w/faked, unreachable source addresses + random seq numbers), yet the
port doesn't seem to be flooded.
It's a linux box.
The telnet daemon seems to be able to tell the difference between a faked
packet and a real one. Even when spoofing from localhost, it reports a
connection from unknown.
Obviously, there seems to be a solution to this problem. ??
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