Week 2

Published

October 20, 2025

Vorlesung

  • CIA review.
  • ISO / OSI layered Model
    • review of lower level protocols is important: IP, TCP, UDP
    • exmamples of layer 1 (physical) device:
      • repeater / hub
    • examples of layer 2 device
      • bridge
      • switch
  • IP:
    • IANA: internet assigned number authority
  • ARP (Address Resolution Protocol)
    • DMAC: destination mac address
    • SMAC: source mac address
    • arp-request: a broadcasting message
    • \(\Rightarrow\) spoofing, man-in-the middle attack (MITM)

Tut