The threat to network security from improperly secured WLANs is a real and present danger for today's enterprises. The good news for enterprise managers is that there is a range of strong, vendor neutral solutions available today that addresses the vulnerabilities inherent with the original 802.11 security implementation known as WEP (Wired Equivalent Privacy). For protection against nontargeted attacks enterprises can use 802.1X-based authentication to provide a dynamic keying mechanism for WEP. At the other end of the spectrum, for protection against active, targeted attacks, IT can isolate the WLAN from the corporate network by use of firewall and Virtual Private Network (VPN) technologies.
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