Wireless Networking

For Day 3 of our Networking-focused week, we are going to discuss wireless networking. This article explains what is wireless networking and how wireless security works:

What is Wi-Fi?
Wi-Fi or Wireless Fidelity is a wireless network connection used both in the home and for business purposes. All laptops and some desktops come equipped with wireless adapters to connect to Wi-Fi networks.

There are two primary types of Wi-Fi on the market today, both of which function on the 2.4GHz wireless frequency.

Wireless G, which has a maximum speed of 54Mbps and a maximum range of up to 100 feet outdoors. Indoors, the signal range can be reduced to less than 30 feet depending on the number of walls between the computer and the wireless router.

Wireless N, which has a maximum speed of 300Mbps and a maximum range of up to 300 feet outdoors. Indoors, the signal range can be reduced to less than 50 feet depending on the number of walls between the computer and the wireless router.

Wireless Security
Wireless Security prevents unauthorized access to wireless networks. The wireless signal in a home is accessible outside the walls of the residence and if a malicious user uses the network for illegal activities, the owner and operator of the network can be held accountable.

There are two primary types of wireless security, WPA and WEP. Both security measures use security keys or encryption keys to protect the network.

WEP is compatible with almost all devices, but the security can be broken by an experienced hacker given time. WEP also uses a longer security key that is typically random letters and numbers.

WPA and WPA2 is slightly less compatible but is far more secure, also uses a shorter, easier to remember security key. Most wireless devices made in the last five years support WPA and WPA2.

Reference:
D-Link. Support Glossary.
http://bit.ly/e7WjlF

Linksys. Learning Center.
http://bit.ly/gJQpdO