Abstract: IEEE 802.11-2007 Standard for wireless network classifies security algorithms into: RSNA and Pre-RSNA. Pre-RSNA algorithms are the algorithms used before RSNA. Pre-RSNA security comprises the algorithms; WEP (Wired Equivalent Privacy) and IEEE 802.11 entity authentication. RSNA security comprises the algorithms like TKIP, CCMP, RSNA establishment and termination procedures, including use of IEEE 802.1X authentication, key management procedures and providing mechanisms for protecting management frames.