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Network Security · Module 8 of 10

Wireless security

Secure Wi-Fi networks.

📖 Key ideas

  1. Use WPA3 (or WPA2-AES at minimum); never WEP.
  2. Strong passphrases and change default router passwords.
  3. Enterprise Wi-Fi uses 802.1X with RADIUS.
  4. Separate guest networks from internal networks.
  5. Watch for rogue access points and evil twins.
💡 Real-life example: Wi-Fi security is locking the front door of an invisible house that people outside can reach.
WPA3Latest Wi-Fi security protocol
WEPOld broken Wi-Fi security
Evil twinFake Wi-Fi mimicking a real one
802.1XPort-based network authentication