Re: [dtn-security] Newbie seeking some security related advice
Stephen Farrell <stephen.farrell@cs.tcd.ie> Tue, 09 June 2009 17:07 UTC
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Date: Tue, 09 Jun 2009 17:58:51 +0100
From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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To: "Ivancic, William D. (GRC-RHN0)" <william.d.ivancic@nasa.gov>
References: <89E48AE60E64EF4E8EB32B0B7EC74920A1B0F5@EVS-EC1-NODE2.surrey.ac.uk> <4A12195A.6000207@LeonixSolutions.com> <3A5AA67A8B120B48825BFFCF5443856137E0B06196@NDJSSCC03.ndc.nasa.gov> <4A1DD73F.50000@bbn.com> <023601c9df2a$694fd5b0$3bef8110$@com> <4A2DF7FD.5020104@LeonixSolutions.com> <3A5AA67A8B120B48825BFFCF5443856137E3553C4B@NDJSSCC03.ndc.nasa.gov>
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Subject: Re: [dtn-security] Newbie seeking some security related advice
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I agree about being wary of marketing-speak. However, if you have an environment where you are sometimes disrupted then looking at a DTN option is quite reasonable. I can well imagine someone doing a good job with voice over the BP esp. with that superseding bundle stuff (2nd mention today:-), but of course doing it well would be non-trivial. Who's talking about DTN for air traffic control? S. Ivancic, William D. (GRC-RHN0) wrote: > Graham, > > > > Some applications simply are not delay tolerant. If I need to say > “Incoming, take cover!” 10 seconds delay is unacceptable. > > > > I hear some talk about DTN for air traffic control. Safety of flight, > safety of life, ... I don’t think so. I’ll walk! > > > > Now, for some air traffic application such a perhaps passenger lists of > fuel and weight, a few seconds or a minute may not be an issue, but at > that point you have good links and don’t need DTN. > > > > Beware of the Buzz Words and Marketing. DTN is great for some things, > bad for others and there are situations were one could not communicate > at all without DTN. > > > > You have to educate the customer. Do so in your proposal and point out > the folly of DTN in a primarily voice network and you will take the > contract from those proposing otherwise. > > > > > > /Will > > > > *From:* Graham Keellings (Leonix Solutions Pte Ltd) > [mailto:Graham@LeonixSolutions.com] > *Sent:* Tuesday, June 09, 2009 1:50 AM > *To:* redi@bbn.com > *Cc:* 'Armando Caro'; Ivancic, William D. (GRC-RHN0); > dtn-security@maillists.intel-research.net > *Subject:* Re: [dtn-security] Newbie seeking some security related advice > > > > .... > > As Armando describes, we are currently using streaming voice over BP. > > Individual packets contain 20-100ms of voice, so sending those individual > > buffers in an individual disrupted fashion would not make a whole lot of > > sense. > > Note that we are also working on providing voice-snippets of 1-10s > > > > Wow! That surely *is* delay tolerant (if not disruption tolerant). You > have to wait until you have collected 10 seconds of voice at the sender > before transmitting. That guarantees a lag of over 9 seconds at the > receiver, or 18+ seconds to get a reply to a question. > > I think that I need to rethink :-) Or, at least, we can say that such > delay might be acceptable in some scenarios, but not in others. Nasa > might have no choice, given the lag inherent in very long range > transmissions, but I doubt that DARPA can accept multi-seconds delays in > combat scenarios. > > I am looking at a "real time" voice network, where it has been strongly > "suggested" that I use DTN, but I am thinking that all that it will > bring to my particular use case is that I don't have to worry about > "link lost" for a short time bringing down the call. My personal feel > is that DTN is not the right tool for the job for a mainly voice based > short range system where speed of reply is of the essence. I don't see > that the benefits justify it, but then I don't get to make the decision > (and if I recommend against it, I probably don't get the contract. Sigh) > > Thank you very much for taking he time to reply and for helping me to > clarify my thoughts. > > With best wishes, > > Graham > > > > > > ------------------------------------------------------------------------ > > _______________________________________________ > dtn-security mailing list > dtn-security@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-security
- [dtn-security] Re(2): [dtn-interest] Bundle Secur… Peter Lovell
- Re: [dtn-security] [dtn-interest] Bundle Security… Hans Kruse
- [dtn-security] Bundle Security Protocol Implement… M.Bhutta
- Re: [dtn-security] Newbie seeking some security r… Armando Caro
- Re: [dtn-security] Newbie seeking some security r… Ivancic, William D. (GRC-RHN0)
- Re: [dtn-security] Newbie seeking some security r… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Newbie seeking some security r… Jason Redi
- Re: [dtn-security] Newbie seeking some security r… Armando Caro
- Re: [dtn-security] Newbie seeking some security r… Kristian Erik Hermansen
- Re: [dtn-security] Newbie seeking some security r… Ivancic, William D. (GRC-RHN0)
- Re: [dtn-security] Newbie seeking some security r… Stephen Farrell
- Re: [dtn-security] Newbie seeking some security r… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Newbie seeking some security r… Kristian Erik Hermansen
- [dtn-security] Newbie seeking some security relat… Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(many): Is there a "secure" refe… Peter Lovell
- Re: [dtn-security] Re(2): Re(2): Is there a "secu… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Is there a "secure" reference … Peter Lovell
- [dtn-security] Re(2): Re(2): Re(2): Is there a "s… Peter Lovell
- [dtn-security] Re(2): Re(2): Is there a "secure" … Peter Lovell
- Re: [dtn-security] Re(2): Is there a "secure" ref… Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Is there a "secure" referen… Peter Lovell
- Re: [dtn-security] Is there a "secure" reference … Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Is there a "secure" referen… Peter Lovell
- Re: [dtn-security] Is there a "secure" reference … Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Is there a "secure" reference impl… Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Newbie seeking some securit… Peter Lovell
- Re: [dtn-security] Newbie seeking some security r… Jason Redi
- Re: [dtn-security] Newbie seeking some security r… Stephen Farrell
- Re: [dtn-security] Newbie seeking some security r… Ivancic, William D. (GRC-RHN0)
- Re: [dtn-security] Newbie seeking some security r… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Encrypted IP headers Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Encrypted IP headers Peter Lovell
- Re: [dtn-security] Encrypted IP headers Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Re(2): How do you feel abou… Peter Lovell
- Re: [dtn-security] Re(2): How do you feel about B… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Re(2): Re(2): Re(2): Is there … Ivancic, William D. (GRC-RHN0)
- [dtn-security] Re(2): Re(2): Re(2): Is there a "s… Peter Lovell
- [dtn-security] Re(2): How do you feel about Bonjo… Peter Lovell
- Re: [dtn-security] How do you feel about Bonjour/… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] How do you feel about Bonjour/… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Re(2): Re(2): Is there a "secu… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] How do you feel about Bonjour/… Peter Lovell
- [dtn-security] How do you feel about Bonjour/Avah… Graham Keellings (Leonix Solutions Pte Ltd)