Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat-02
Bob Briscoe <rbriscoe@jungle.bt.co.uk> Fri, 28 March 2008 01:25 UTC
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Date: Fri, 28 Mar 2008 01:25:10 +0000
To: Rob Sherwood <capveg@cs.umd.edu>
From: Bob Briscoe <rbriscoe@jungle.bt.co.uk>
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Subject: Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat-02
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Rob, Just to be clear, our original aim was merely to put what you had done into IETF standards-speak because we believed you (and previous researchers on the same tack) had identified a serious vulnerability and a reasonable solution. However, on writing up the I-D, we quickly realised the TCPM w-g would likely have issues with some of the precise details of your approach, so we ended up inventing a slightly different but broadly similar approach. It's been fairly closely scrutinised technically on the list. I think we have satisfied most people that a 'good' solution is possible that has no harmful side-effects - at least in theory. You're right that we haven't simulated or implemented the deltas from your approach. This was originally a sideline activity - just a write up that turned into more than we had planned. Nonetheless, Toby Moncaster (the primary author) now has plans to simulate it and write up the outcome. I can't be more precise 'cos I'm responding on his behalf, as he's on his sick-bed at the mo. I guess if it became a WG item, he'd get simulations done sharpish. Bob At 19:33 26/03/2008, Rob Sherwood wrote: >My take on this issue is that people are >divided into three[1] camps: >---snip--- >c) people who believe this attack is practical and dangerous, but felt > my randomly-skipped segments solution was not "good" for > reasons of efficiency, correctness, etc. >---snip--- >But that still leaves >the bottleneck on people in group (c) to come up with a "good" >solution. Bob Briscoe et al. have come up with a variant on my >solution, but I am not certain how well its been scrutinised or if it >has even been implemented. ____________________________________________________________________________ Notice: This contribution is the personal view of the author and does not necessarily reflect the technical nor commercial direction of BT plc. ____________________________________________________________________________ Bob Briscoe, Networks Research Centre, BT Research B54/77 Adastral Park,Martlesham Heath,Ipswich,IP5 3RE,UK. +44 1473 645196 _______________________________________________ tcpm mailing list tcpm@ietf.org https://www.ietf.org/mailman/listinfo/tcpm
- [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat-02 Stefanos Harhalakis
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Rob Sherwood
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Bob Briscoe
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Pekka Savola
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Rob Sherwood
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Caitlin Bestler
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Anantha Ramaiah (ananth)
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Jakob Heitz
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Rob Sherwood
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… David Malone
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Rob Sherwood
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Stefanos Harhalakis
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Fernando Gont
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Stefanos Harhalakis
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… John Kristoff
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Caitlin Bestler
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Bob Briscoe
- Re: [tcpm] PoC for draft-moncaster-tcpm-rcv-cheat… Rob Sherwood