Network Security FAQ: Remote Access
Q1. What does AAA stand for, and what is its function?
Q2. What is authentication used for?
Q3. What is authorization used for?
Q4. What is accounting used for?
Q5. What are the three types of authentication servers supported by Cisco IOS?
Q6. List three characteristics of the TACACS+ protocol.
Answer: Three characteristics of the TACACS+ protocol are as follows:
- Packets sent between client/server are TCP.
- TCP port is 49.
- There is packet encryption.
Q7. List three characteristics of the RADIUS protocol.
Answer: Three characteristics of the RADIUS protocol are as follows:
- Packets sent between client/server are UDP.
- UDP port is 1812.
- There is password encryption.
Q8. What Cisco IOS command is used to enable AAA on a router?
Q9. What is the Cisco IOS lock-and-key feature?
Q10. Give an example of two-factor identification.