Auth - 802.1x

Question 1

802.1x

Answer 1

▪ Standardized framework used for port-based authentication on wired and
wireless networks
▪ RADIUS
▪ TACACS+
▪ 802.1x can prevent rogue devices

Question 2

Extensible Authentication Protocol (EAP)

Answer 2

▪ A framework of protocols that allows for numerous methods of
authentication including passwords, digital certificates, and public key
infrastructure

Question 3

Types of EAP

Answer 3

▪ EAP-MD5 uses simple passwords for its challenge-authentication
▪ EAP-TLS uses digital certificates for mutual authentication
▪ EAP-TTLS uses a server-side digital certificate and a client-side password
for mutual authentication

Question 4

Other EAPs

Answer 4

EAP-FAST
▪ Provides flexible authentication via secure tunneling (FAST) by using a
protected access credential instead of a certificate for mutual
authentication
Protected EAP (PEAP)
▪ Supports mutual authentication by using server certificates and
Microsoft’s Active Directory to authenticate a client’s password
LEAP is proprietary to Cisco-based networks