Wireless networks are being used increasingly, both in the workplace and at home.

While they bring freedom from lots of wires running around the house, it can also bring the home user problems from a security point of view.

Most wireless network devices by default, come with their security encryption turned off. This is usally done by the manufacturer, so that it's very easy to get their product up and running. The download of this it that the end user, doesn't then go the next step and look into turning on the encryption.

Basically, there are two types of encryption, WEP and WPA.

WEP can come in 64/128 bits modes and is better than no encryption but certainly not as secure as WPA.

The next item to look at is SSID (service set identifier) and SSID broadcasting

SSID is a configurable identification that allows clients to communicate to the appropriate wireless access point (WAP). For example, on a LinkSys access point this is usually called LinkSys.

Although some people disable the SSID boardcast, it cannot be considered a valid security tool.

Change your SSID (Service Set Identifier) to something non-descriptive
You do not want to give out your name, address, or any other useful information to potential hackers. Also, using the default SSID is a bad idea. A good example would be anything non-descriptive like "flower" or "napkin" and a bad example would be "235 Elm St." or "Johnson Family".

Change the default password(s) on your access points: The default passwords of most network equipment are well known and could allow an intruder to gain access to your access point(s).

Disallow router / AP administration via wireless: This feature is usually only present in "Enterprise-grade" AP's, and shuts off the ability to administer your Access Point from wireless clients. But if your router/AP has it, use it.

Enable MAC based filtering: Using this feature, only your unique wireless cards can communicate with your access point.