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LM 1. Evolution of Wireless Network

LM 1. Evolution of Wireless Network. Dr. Lei Li. Road Map. Introduction. Mobile Security. Security Auditing & Risk Analysis. WLAN Security. Mobile Network Overview. Evolution of Wireless Network. WLAN Overview. Infor. Security Essentials. WLAN Threats & Vulnerabilities.

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LM 1. Evolution of Wireless Network

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  1. LM 1. Evolution of Wireless Network Dr. Lei Li

  2. Road Map Introduction Mobile Security Security Auditing & Risk Analysis WLAN Security Mobile Network Overview Evolution of Wireless Network WLAN Overview Infor. Security Essentials WLAN Threats & Vulnerabilities Cellular Network Security WLAN Security Mobile Security Threats WLAN Security Tools Mobile Devices Security

  3. Learning Outcomes After this module, a student will be able to: • Explain the OSI model and functionality of each layer in OSI model. • Describe MAC address and IP Address • Explain the difference between packet switching and circuit switching • Describe the history of wireless networking • Discuss the economic impact of wireless networking

  4. OSI Reference Model • Open Systems Interconnection model • Conceptual model • Interoperability of diverse communication systems • Partition a communication system into 7 abstraction layers

  5. OSI Layers Image source: https://www.tes.com/lessons/AMRvJVl32tmEEQ/osi-model

  6. Source: http://searchnetworking.techtarget.com/answer/What-is-the-difference-between-OSI-model-and-TCP-IP-other-than-the-number-of-layers

  7. MAC Address vs. IP Address • Mac address • Serial number assigned to network adaptor • Used to identify a device in Local Area Network • Data link layer • IP Address • Number used to identify a device on TCP/IP network, e.g., Internet • Network layer • IPv4 – 32-bit address • IPv6– 128 bit address

  8. Circuit & Packet Switching • Circuit Switching • Dedicated connection established before the communication • Suitable for Public Switched Telephone Network • Packet Switching • Data broken into small packages at the sources, transmitted over the network at any order, & assembled at destination. • Connection shared by many users • Suitable for data network

  9. History of WLAN • WLAN • Wireless Network based on IEEE 802.11 • Defined at data link layer of OSI • Wifi– family of products work on WLAN • WLAN Standards • IEEE 802.11 workgroup • Unlicensed band • ALOHAnet • 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac…. • Convergence of voice and data network

  10. Social & Economic Impacts of Wireless Network • Health care industry • Financial sector • Education • Bring Your Own Device (BYOD)

  11. Reference • Praphul Chandra, Bulletproof Wireless Security: GSM, UMTS, 802.11, and Ad Hoc Security, ELSEVIER, 2005. • Jim Doherty, Wireless and Mobile Device Security, Jones & Bartlett Learning, 2016. • https://en.wikipedia.org/wiki/OSI_model • https://askleo.com/whats_the_difference_between_a_mac_address_and_an_ip_address/ • https://www.webopedia.com/DidYouKnow/Internet/ipv6_ipv4_difference.html • http://www.rfwireless-world.com/Terminology/circuit-switching-vs-packet-switching.html • http://www.cablefree.net/wireless-technology/history-of-wifi-technology/ • http://g3ict.org/download/p/fileId_920/productId_233 • https://www.taylored.com/blog/what-is-byod-and-how-does-it-impact-your-wireless-network/

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