No Authentication gives an open network where everyone can connect.

WEP (Wired Equivalent Privacy) is a security algorithm for IEEE 802.11 wireless networks.

WPA2-Personal and WPA-Personal are security protocols and security certification programs that secure wireless computer networks. They both use a Pre-shared key. They do not require an authentication server.

WPA2-Enterprise and WPA-Enterprise are designed for enterprise networks and requires a RADIUS authentication server. This requires a more complicated setup, but provides additional security. Various kinds of the Extensible Authentication Protocol (EAP) are used for authentication.

802.1X is a standard for Port-based Network Access Control. It is part of the IEEE 802.1 group of networking protocols and it provides an authentication mechanism. IEEE 802.1X defines the encapsulation of the EAP (Extensible Authentication Protocol).

TKIP is a suite of algorithms that works as a "wrapper" to WEP, which allows users of legacy WLAN equipment to upgrade to TKIP without replacing hardware. It s a more secure encryption than the notoriously weak Wired Equivalent Privacy (WEP).

AES is a specification for encryption of electronic data. It is a symmetric-key algorithm, meaning the same key is used for both encrypting and decrypting the data.

If the selected network requires a security key (password) it must be entered.