Re: [secdir] secdir review of draft-ietf-tictoc-multi-path-synchronization-05
Ben Laurie <benl@google.com> Mon, 19 September 2016 11:00 UTC
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From: Ben Laurie <benl@google.com>
Date: Mon, 19 Sep 2016 12:00:41 +0100
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To: Tal Mizrahi <talmi@marvell.com>
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Cc: "Karen ODonoghue (odonoghue@isoc.org)" <odonoghue@isoc.org>, "secdir@ietf.org" <secdir@ietf.org>, Suresh Krishnan <suresh.krishnan@ericsson.com>, "draft-ietf-tictoc-multi-path-synchronization.all@tools.ietf.org" <draft-ietf-tictoc-multi-path-synchronization.all@tools.ietf.org>, "<iesg@ietf.org>" <iesg@ietf.org>
Subject: Re: [secdir] secdir review of draft-ietf-tictoc-multi-path-synchronization-05
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On 19 September 2016 at 01:34, Tal Mizrahi <talmi@marvell.com> wrote: > Time protocols have a pretty unique property: even if you use the > strongest cryptographic mechanisms, the protocol can still easily be > attacked by a man-in-the-middle who simply adds a constant delay to some of > the packets, and thereby easily manipulates the protocol. The only way to > mitigate delay attacks is by redundancy: multiple time sources and/or > multiple network paths. Surely not - challenge/response, for example, would also reveal a delay.
- [secdir] secdir review of draft-ietf-tictoc-multi… Watson Ladd
- Re: [secdir] secdir review of draft-ietf-tictoc-m… Tal Mizrahi
- Re: [secdir] secdir review of draft-ietf-tictoc-m… Watson Ladd
- Re: [secdir] secdir review of draft-ietf-tictoc-m… Tal Mizrahi
- Re: [secdir] secdir review of draft-ietf-tictoc-m… Ben Laurie
- Re: [secdir] secdir review of draft-ietf-tictoc-m… Tal Mizrahi
- Re: [secdir] secdir review of draft-ietf-tictoc-m… Watson Ladd