Wi-Fi Explained: How It Works and What to Look For
Wi-Fi uses IEEE 802.11 protocols to connect devices over a wireless local network.
Published by Protocol Explorer · Reviewed
How Wi-Fi works
A station discovers an access point and proceeds through authentication and association; security procedures depend on the network configuration.
What to look for in an exchange
Management frames establish and maintain the wireless relationship. Link-layer association is distinct from obtaining an IP address through DHCP.
Follow an example step by step
- Observe beacon or probe information that identifies a candidate access point.
- Follow the station’s authentication and association management frames.
- After association and any configured security exchange, look for network-layer configuration such as DHCP.
Common interpretation mistake
Association with an access point does not by itself guarantee internet access.
Key point to remember
Wireless frames can be unavailable or incomplete in a capture unless the adapter and capture mode support them.
Explore the protocol
The Wi-Fi overview is free without an account. Its full interactive lesson is included in Protocol Explorer Pro, a one-time $4.99 purchase; an account is required to buy Pro and restore the licence across devices.
Open Protocol Explorer · Compare Free and Pro
Specification
Read the primary specification for Wi-Fi for the authoritative protocol details. The interactive scenario is a simplified teaching model, not a capture of your network.
Continue learning
How to read a packet · TCP · UDP · HTTPS