Wi-Fi Protected Access (WPA) is a standards-based security solution from the Wi-Fi Alliance that addresses the vulnerabilities in native WLANs and provides enhanced protection from targeted attacks. WPA addresses all known Wired Equivalent Privacy (WEP) vulnerabilities in the original IEEE 802.11 security implementation and brings an immediate security solution to WLANs in both enterprise and Small Office/Home Office (SOHO) environments. WPA uses Temporal Key Integrity Protocol (TKIP) for encryption. WPA is fully supported by the Cisco Unified Wireless Network. The older operating systems such as DOS, Windows95, Windows NT did not support WPA.