11. Wireless Network Security

Part 11 of Computer Networking Fundamentals: Wireless Network Security

Wireless Network Security

At the end of this episode, I will be able to:

1. Compare and contrast wireless security technologies.

Learner Objective: Compare and contrast wireless security technologies

Description: In this episode, the learner will explore a variety of wireless network security technologies.

• Introduction to Network Infrastructure
  • Wireless Security
    • WEP
      • Weak or vulnerable to attack(Avoid)
      • Uses a static key
      • 64-bit or 128-bit key
      • RC4 stream cipher
      • CRC checksum
    • WPA
      • Weak or vulnerable to attack(Avoid)
      • Uses Temporal Key Integrity Protocol
      • Per-packet encryption
      • RC4 stream cipher
      • Message Integrity Check
    • WPA2
      • Stronger (Implement)
      • Uses CCMP
        • Counter Mode Cipher Block Chaining Message Authentication Code Protocol
      • Advanced Encryption Standard
      • 128-bit key
    • WPA3
      • Strongest
      • Uses SAE
      • 128-bit or 192-bit encryption
    • WPS
      • Push-button security
      • Simplifies implementing security
      • Weak or vulnerable to attack (Avoid)
      • Disable
    • Personal Mode
      • WPA/WPA2/WPA3 implementation
      • Requires no additional infrastructure
      • Uses a preshared key or PSK (think password)
    • Enterprise Mode
      • WPA/WPA2/WPA3 implementation
      • Requires additional infrastructure
      • Utilizes 802.1X port-based authencation
      • Requires a Remote Access Dial-in Server (RADIUS)
    • MAC Filtering
      • A security technique that identifies which wireless clients are allowed or denied access to the wireless network based on the client's media access control address.