hybrid stealthy networks - paper presentation

Written by Durresi, Paruchuri and Barolli

2008

Why?

David Drager - CSE 603 Spring 2009 2

Battlefield 2Screenshot

Fighting with a large army under your command is nowise different from fighting with a small one: it is merely a question of instituting signs and signals.- Sun Tzu, The Art of War

The Challenge

Wireless Adhoc Networks have many military uses

Traditional platforms (mica2, micaz) are not secure

How do we fix these issues?


Overview

What problems does this paper address?

The objective is to make a secure ad hoc wireless network.


Related Work Protocols for directional antennas – Energy savings

Optical networks – Last mile fix?

Previous work does not focus on security aspect but on performance


Antenna Design Mica2/Micaz platform – omnidirectional dipole

antenna.

These radiate in a doughnut shape pattern


Source: Antennatheory.com

Directional Antennas

Patch Antenna

Horn Antenna

Dish Antenna


Beamwidth How wide of an area the signal can be received

θ = Angle of radiation


Propagation Transmitted power decays as R-a

a varies between 2 & 4 depending on the medium

Received Power:

Gain of the transmitter:


Network Architecture Hybrid means that we will have both wireless and

optical connection

Optical: means that we will need to lay fiber.

Pros: Fast, latency free, secure; Cons: Hard to deploy

“AP” – Access Point

Wireless: Steerable, Assume has GPS to locate

“MN” – Mobile Node

Red Zones: Enemy listeners or even jammers


Network Architecture


Stealthy Communications Each MN has info about AP Locations; other MNs

Public Key distribution of all nodes

MN calculates location of closest AP based on location

Routing Tables


Stealthy PerformanceProbability of detection:

With one node:


Stealthy Performance Of multiple nodes:

(200m range): (100m range):


Conclusions Hybrid Stealthy Communications Protocol (HSCP) is

able to minimize detection to around .5% when there are multiple eavesdroppers.

Change power of the MN to receive even better stealth.

This protocol can be used in the battlefield to reach our original goal.



Questions?

hybrid stealthy networks - paper presentation

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