23
These three are meant for the home user:
None:
No encryption in use
WEP:
The most popular but least secure form of encryption
WPA/WPA2-PSK:
The most secure and recommended level of encryption
The remaining two are for use in a corporate environment that utilizes authentication
servers. If you do not know if you have an authentication server, you probably don’t and
will want to stick with the three options above.