210-260 · Question #22
In which three ways does the TACACS protocol differ from RADIUS? (Choose three)
The correct answer is A. TACACS uses TCP to communicate with the NAS B. TACACS can encrypt the entire packet that is sent to the NAS F. TACACS support per-command authorization. TACACS+ uses Transmission Control Protocol (TCP) port 49 to communicate between the TACACS+ client and the TACACS+ server. An example is a Cisco switch authenticating and authorizing administrative access to the switch’s IOS CLI. The switch is the TACACS+ client, and Cisco…
Question
In which three ways does the TACACS protocol differ from RADIUS? (Choose three)
Options
- ATACACS uses TCP to communicate with the NAS
- BTACACS can encrypt the entire packet that is sent to the NAS
- CTACACS authenticates and authorizes simultaneously, causing fewer packets to be transmitted
- DTACACS uses UDP to communicate with the NAS
- ETACACS encrypts only the password field in an authentication packet
- FTACACS support per-command authorization
How the community answered
(55 responses)- A95% (52)
- C2% (1)
- D4% (2)
Explanation
TACACS+ uses Transmission Control Protocol (TCP) port 49 to communicate between the TACACS+ client and the TACACS+ server. An example is a Cisco switch authenticating and authorizing administrative access to the switch’s IOS CLI. The switch is the TACACS+ client, and Cisco Secure ACS is the server. TACACS+ communication between the client and server uses different message types depending on the function. In other words, different messages may be used for authentication than are used for authorization and accounting. Another very interesting point to know is that TACACS+ communication will encrypt the entire packet.
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