Network Security Fundamentals — Cybersecurity Mind Map

18. Network Security Fundamentals

Network security is the backbone of all cybersecurity defence. This mind map covers protocols, devices, monitoring tools, and common attack vectors from the ground up.

Topics Covered

  • OSI model security at each layer
  • TCP/IP security and hijacking
  • Firewalls: stateful vs NGFW
  • IDS/IPS: signature vs anomaly
  • Network segmentation: DMZ, VLANs
  • VPN technologies
  • Wireshark and packet analysis
  • MITM and ARP spoofing
  • DNS attacks and DNS security