Re: [dtn-security] Newbie seeking some security related advice

Armando Caro <acaro@bbn.com> Thu, 28 May 2009 00:16 UTC

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From: Armando Caro <acaro@bbn.com>
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Subject: Re: [dtn-security] Newbie seeking some security related advice
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Ivancic, William D. (GRC-RHN0) wrote:
> I believe DARPA is using DTN for voice networks but I believe the disruption is expected to be very quick fades and the like or perhaps that voice simply will not make sense at certain times.

I believe you are referring to the work that BBN is doing for the DARPA 
WNaN program. For this program, we run IP over DTN and use VoIP without 
modifications to the VoIP application. We are using the BPA as a 
forwarding engine that works in both connected and disconnected 
scenarios. VoIP traffic (and other delay sensitive traffic) are only 
routed/forwarded to destinations that are currently connected, since 
VoIP doesn't make sense for disconnected destinations. If a node 
receives VoIP traffic for a disconnected destination, the traffic is 
dropped.

One important take-away from this work... the motivation of DTN is to 
support delay/disrupted scenarios and apps that can operate in that 
regime, but it is possible to implement a DTN stack that can also deal 
with time-sensitive traffic.

Armando