WEP is a mechanism for authenticating WLAN clients and for and data encryption in 802.11 wireless LANs. WEP requires between one and four "keys" to be defined. Each WLAN client and access point must have a WEP key in common before data can be encrypted and exchanged between them. WEP has a number of well-documented flaws that make it suitable only for use in wireless LANs that are lightly-used and which do not carry sensitive information. WEP is not an end-to-end encryption mechanism - it only encrypts data whilst it is being transmitted over the air.
How to implement WEP
Looking for training or advice on WEP and other concepts - to implement robust, secure, scalable and reliable wireless networks?