Wireless LANs (WLANs) are quickly gaining popularity due to their ease of installation and higher employee mobility. Constant increase in use of wireless infrastructure networks for business purposes created a need for strong safety mechanisms. This paper describe the various security issues in Wireless LAN implemented using Virtual Private Networking with an attempt to suggest a model of security implementation. The paper also gives a summary of security improvements of WEP protocol that can lead to a higher level of wireless network infrastructure protection. Comparative analysis shows the advantages of the new 802.11i standard in comparison to the previous security solutions.

authentication, confidentiality, integrity, WEP protocol, deficiencies of WEP, security threats to 802.11, TKIP, 802.1x, WLAN safety improvements, RC4, AES