Re: [tcpm] DoS attack from misbehaving receivers

Stephen Hemminger wrote:
> Has anyone in this group explored the problems described in:
> "Misbehaving TCP Receivers Can Cause Internet-Wide Congestion Collapse"?
> 
> 	http://www.cs.umd.edu/~capveg/optack/optack-ccs05.pdf
> 	http://www.cs.umd.edu/~capveg/
> 	http://www.kb.cert.org/vuls/id/102014
> 
> A possible solution (optack) is described in the paper that involves the
> sender randomly skipping segments and resetting connections that
> ACK data that was never sent.  But it is not clear that the impacts
> of such a change have been fully investigated.

There's very little in TCP that is intended to work well with a
byzantine receiver. Except for our security protocols, very little of
the Internet deals well with them either.

Joe

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Joe Touch
Sr. Network Engineer, USAF TSAT Space Segment

Re: [tcpm] DoS attack from misbehaving receivers

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