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LM 1. Evolution of Wireless Network

Explore the history and impact of wireless networking, learn OSI model layers, WLAN security essentials, and mobile device security threats and tools. Discover WLAN standards, MAC vs. IP addresses, packet vs. circuit switching, and BYOD references.

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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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