Securely accessing remote sensors in critical infrastructures. - - PowerPoint PPT Presentation
Securely accessing remote sensors in critical infrastructures. SUPERVISORS: RESEARCH PROJECT 2 CEDRIC BOTH PAVLOS LONTORFOS JEROEN DO BOER 1 SECURITY AND NETWORK ENGINEERING The use of sensors Transportation Power grid networks
RESEARCH PROJECT 2 PAVLOS LONTORFOS
SECURITY AND NETWORK ENGINEERING
1
SUPERVISORS: CEDRIC BOTH JEROEN DO BOER
SECURITY AND NETWORK ENGINEERING
2
Various sectors where sensors are used. Source: Cisco IBSG, April 2011 Image
Monitor infrastructure environment
Challenges
SECURITY AND NETWORK ENGINEERING
3
Can Software Defined Networks (SDN) improve the redundancy and security of a sensor network in critical infrastructure?
SECURITY AND NETWORK ENGINEERING
4
Can Software Defined Networks (SDN) improve the redundancy and security of a sensor network in critical infrastructure? Devided in 3 subquestions:
SECURITY AND NETWORK ENGINEERING
5
Can Software Defined Networks (SDN) improve the redundancy and security of a sensor network in critical infrastructure? Devided in 3 subquestions:
SECURITY AND NETWORK ENGINEERING
6
Can Software Defined Networking (SDN) improve the redundancy and security of a sensor network in critical infrastructure? Divided in 3 sub questions:
SECURITY AND NETWORK ENGINEERING
7
Software Defined Networks
SECURITY AND NETWORK ENGINEERING
8
Simplified representation of SDN architecture. Source: https://www. sdxcentral.com/articles/contributed/the-sdn-gold-rush-to-the-northbound-api/2012/11/
LoRa
SECURITY AND NETWORK ENGINEERING
9
The network server connects sensors, gateways and end-user applications and ensures reliable and secure data routing all along the LoRaWAN network. Retrieved from “https://www.actility.com/lorawan-network- server/”
In 2014, Andrea Detti et al. published research with the benefits of an SDN- based implementation of a Wireless Mesh Networks(WMN)
SECURITY AND NETWORK ENGINEERING
10
Source from research paper “Controller selection in a Wireless Mesh SDN under network partitioning and merging scenarios”
In 2017, Zhiwei Zhang et al. proposed an Efficient Software-Defined Wireless Sensor Network architecture
SECURITY AND NETWORK ENGINEERING
11
Source from research paper “ Software defined wireless sensor networks application opportunities for efficient network management: A survey”
SECURITY AND NETWORK ENGINEERING
12
SECURITY AND NETWORK ENGINEERING
13
Network Function Virtualization
OpenVSwitch (OVS) SDN Controller
LoRa Gateways
The Things Network
SECURITY AND NETWORK ENGINEERING
14
Centralized control, ACLs and QoS
network
SECURITY AND NETWORK ENGINEERING
15
Controller failure
network server
SECURITY AND NETWORK ENGINEERING
16
Redundant sensor network server
servers
northbound APIs
SECURITY AND NETWORK ENGINEERING
17
Individual Sensor Handling
SECURITY AND NETWORK ENGINEERING
18
Gateway or switch failure
SECURITY AND NETWORK ENGINEERING
19
SECURITY AND NETWORK ENGINEERING
20
Redundancy
redundant topologies
Scalability
SECURITY AND NETWORK ENGINEERING
21
Security
for events
Can SDN improve redundancy
Yes, due to better control and automated countermeasures
Can SDN improve scalability
Yes, using virtualized network functions and northbound API
Can SDN improve security
Probably yes, due to easier monitoring of the network
Can Software Defined Networks (SDN) improve the redundancy and security of a sensor network in critical infrastructure? Yes
SECURITY AND NETWORK ENGINEERING
22
Virtualized Network Functions
Individual sensor handling for LoRa sensors
SECURITY AND NETWORK ENGINEERING
23
SECURITY AND NETWORK ENGINEERING
24