3.2 Port Security

Question 1

Port Security

Answer 1

• We’ve created many authentication methods through
  the years– A network administrator has many choices
• Use a username and password– Other factors can be included
• Commonly used on wireless networks

Question 2

EAP

Answer 2

• Extensible Authentication Protocol (EAP)– An authentication framework
• Many different ways to authenticate based on RFC
  standards– Manufacturers can build their own EAP methods
• EAP integrates with 802.1X– Prevents access to the network until the
  authentication succeeds

Question 3

IEEE 802.1X

Answer 3

• IEEE 802.1X– Port-based Network Access Control (NAC)– You don’t get access to the network until you
  authenticate
• EAP (Extensible Authentication Protocol)– 802.1X prevents access to the network until the
  authentication succeeds
• Used in conjunction with an authentication database– RADIUS, LDAP, TACACS+, Kerberos,

Question 4

IEEE 802.1X and EAP

Answer 4

Supplicant - the client
* Authenticator - The device that provides access
* Authentication server - Validates the client credentials