Wireless Sensor Networks and the Internet of Things: Do We Need a Complete Integration?

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1 Wireless Sensor Networks and the of Things: Do We Need a Complete Integration? Cristina Alcaraz, Pablo Najera, Javier Lopez, Rodrigo Roman Universidad de Málaga Spain

2 2 IoT, Sensor Networks

3 3 Imagenes: Feli ( decoraciona.com, decorailumina.com, decoracion.in

4 FEATURES (Intelligence) ENVIRONMENT LOCATION Teddy Bear IDENTITY 4

5 FEATURES (Intelligence) Teddy Bear ENVIRONMENT LOCATION IDENTITY 5

6 6

7 7

8 8 Wireless Sensor Networks (and the IoT)

9 Sensor Nodes!... Living! Speaking! Feeling! Thinking! 9

10 10 WSN?...

11 WSN! Autonomy Not Expensive Lifetime Easy to deploy Self-* 11

12 12 Sensor Nodes Features?

13 Connecting WSN REMOTE LAN IPv6 6LoWPAN 13

14 Integration Strategies WSN (Tunneled) WSN-Specific WSN-Specific Solution Front-End Solution Stack-Based Approaches Gateway Solution Hybrid Solution Topology-Based Approaches Access Point Solution 14

15 When should we integrate WSN IoT? What we need to consider? 15

16 16 Factors to consider on the Integration WSN-IoT

17 Integration Strategies Security Factors Entity Authentication/Authorization And you are? Distributed? Efficient? (TLS? Kerberos?) Solution WSN WSN-Specific WWW/Other Trust the B.S. Front-End Solution 17

18 Integration Strategies Security Factors I DON T think so Access Control Reprogram Node Solution WSN WSN-Specific ACL, AC, Trust the B.S. Front-End Solution 18

19 Integration Strategies Security Factors Secure Communication Too little power TLS? IPsec? Solution WSN WSN-Specific TLS, IPsec Standards Front-End Solution 19

20 Integration Strategies Security Factors HW Capabilities I prefer a smaller one Manage protocols Solution WSN WSN-Specific Manage protocols Front-End Solution 20

21 Integration Strategies Security Factors Resilience!!!!!! Solution IDS Filtering IDS Filtering WSN WSN-Specific Front-End Solution IDS Filtering 21

22 Integration Strategies Security Factors Resilience (2) (Only one) Solution WSN WSN-Specific Front-End Solution 22

23 Integration Strategies Other Factors Accountability Doctor, this is what happened Memory Solution WSN WSN-Specific Memory Memory Front-End Solution 23

24 Integration Strategies Other Factors (SW) Maintainability So, it will hurt? All nodes Solution WSN WSN-Specific One node Front-End Solution 24

25 Integration Strategies Other Factors Maintainability (Availability) a time Solution WSN WSN-Specific (All WSN?) Front-End Solution 25

26 Integration Strategies Application Factors I want A from my door! Network Redundancy B C Door <= Decision Logic Solution WSN WSN-Specific Decision Logic Front-End Solution 26

27 Integration Strategies Application Factors A, door was Network Redundancy (2) A Door Solution <= Memory? Memory? WSN WSN-Specific Memory Memory Front-End Solution 27

28 Integration Strategies Application Factors Intelligence Can I talk with strangers? Push Solution WSN WSN-Specific Push <= Delegate Front-End Solution 28

29 Integration Strategies Application Factors Protocol Optimization IP. ROLL Solution WSN WSN-Specific Front-End Solution Network-specific Protocols 29

30 30 Scenarios and Analysis

31 31 SCADA/Industrial Systems

32 SCADA/Industrial Systems Louis Hippolyte Lafontaine Bridge-Tunnel ( Barco ) 32

33 First Responder (Emergency) Systems Photo by SkyWideDesign 33

34 Integration Strategies Analysis Robustness - SPoF Accountability / Mem DNP, Modbus Solution Maintainability SCADA Resilience / Others Protocol Opt. Resilience / Others Limited Overhead Emergencies Robustness - SPoF Push Model Decentralized Model 34

35 35 Conclusions

36 When? Where? How? depends on Application Requirements 36

37 37 The End

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