smurf, the MCI-developed tracing tools (was Re: Bogus announcement)
Paul Ferguson
ferguson at cisco.com
Sun Dec 28 18:31:48 UTC 1997
At 12:05 PM 12/28/97 -0600, Karl Denninger wrote:
>
>You don't want to filter ICMPs. What you want to filter is ANYTHING which
>came from an invalid source address *at your entrance* from your customer
>connections.
>
This is documented in:
Network Ingress Filtering: Defeating Denial of Service Attacks
which employ IP Source Address Spoofing;
draft-ferguson-ingress-filtering-03.txt
At the moment, we're trying to get this evntually published as
an Informational RFC.
More information can be found at:
ftp://ftp.cert.org/pub/cert_advisories/CA-97.28.Teardrop_Land
- paul
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