Authentication Types

Front 1

802.1X

Back 1

An IEEE standard that defines port-based Network Access Control (PNAC). 802.1X is a Data Link Layer authentication technology used to connect devices to a LAN or WLAN

Front 2

LDAP

Back 2

An Application Layer protocol used for accessing and modifying directory services data. It is part of the TCP/IP suite. Originally used in WAN connections, it has morphed into a protocol commonly used by services usch as Microsoft active directory

Front 3

Kerberos

Back 3

An authentication protocol designed at MIT athat enables computers to prove their identity to each other in a secure manner. It is used most often in a client - servier environment; the client and the server both verify each other's identity.

Front 4

RAS

Back 4

A service that enables dial-up and various types of VPN connections from remote clients.

Front 5

CHAP

Back 5

An authentication scheme used by the point-to-point protocol(PPP) that is the standard for dial-up connections. It utilizes a challenge-response mechanism with one-way encryption.

Front 6

RADIUS

Back 6

Used to provide centralized administration of dial-up, VPN, and wireless authentication. It can be used with EAP and 802.1X

Front 7

TACACS

Back 7

Another remote authentication protocol, similar to RADIUS, and used more often in UNIX networks through it is deprecated.

Front 8

TACACS+

Back 8

Remote authentication developed by Cisco, similar to RADIUS but separates authentication and authorization into two separate processes.