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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: New form of packet attack named Stream
Jamie Rishaw <[email protected]> wrote: > Unless you are > Vixie > Hubbard > Cerf > Donelan > Manning > Bush > Jesus Christ (Randy, you _do_ look like a biblical personage :) > A major s/w key figure > or comparable entity > .. or someone that knows me IRL, and has for some time .. please do not > e-mail me asking for the code. Actually, you provided enough details, so any unix guy who knows his sockets can write the program in fifteen minutes. This type of attack was known for a long time (and there are even nastier variations using TCP header bits and fragments), and, unfortunately, there's no good defense against it. The core routers are indeed vulnerable; is there any router which has an access list for restricting packet flow to the routing processor? (My knowledge of latest-and-greatest features from OFRV is somewhat outdated). A toyed with the idea of reverse-path verification coupled with some kind of super-squelch message; but so far all such schemes have holes in them. DoS attacks are a real scourge. --vadim
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