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A company is implementing multifactor authentication and requires a solution that utilizes TCP. Which of the following will the company MOST likely select?
The TACACS+ protocol provides detailed accounting information and flexible administrative control over the authentication, authorization, and accounting process. ... TACACS+ uses Transmission Control Protocol (TCP) for its transport. TACACS+ provides security by encrypting all traffic between the NAS and the process.
No debate here, TACACS+ is the answer but to those who asked
RADIUS = UDP "DIAL-IN" "REMOTE SERVERS"
Kerberos = Multi-factor "Client-Server" "Tickets" "UDP and TCP"
TACACS+
Terminal Access Controller Access Control System (TACACS+) is Cisco proprietary protocol which is used for the communication of the Cisco client and Cisco ACS server. It uses TCP port number 49 which makes it reliable.
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