What Does TACACS+ Mean in 200-301?
Full form: Terminal Access Controller Access-Control System Plus
Also known as: Terminal Access Controller Access-Control System Plus, TACACS
Quick Definition
A Cisco-developed AAA protocol that uses TCP and encrypts the entire authentication payload.
Full Definition
TACACS+ is a Cisco-developed AAA protocol that uses TCP port 49 and encrypts the entire authentication payload — not just the password. TACACS+ separates authentication, authorisation, and accounting into distinct steps, giving granular control. It is preferred for device administration (managing routers and switches) because of its full encryption and detailed command authorisation capabilities.
Exam Trap — Don't Get Fooled
RADIUS is typically used for network access (Wi-Fi, VPN). TACACS+ is typically used for device administration (router/switch management) because it supports per-command authorisation. Know which protocol goes with which use case.
Related 200-301 Terms
Frequently Asked Questions
What does TACACS+ mean on the 200-301 exam?
TACACS+ is a Cisco-developed AAA protocol that uses TCP port 49 and encrypts the entire authentication payload — not just the password. TACACS+ separates authentication, authorisation, and accounting into distinct steps, giving granular control. It is preferred for device administration (managing routers and switches) because of its full encryption and detailed command authorisation capabilities.
How does TACACS+ appear as a trap on the 200-301?
RADIUS is typically used for network access (Wi-Fi, VPN). TACACS+ is typically used for device administration (router/switch management) because it supports per-command authorisation. Know which protocol goes with which use case.
How important is TACACS+ on the 200-301 exam?
TACACS+ falls under the Security domain of the 200-301 exam. Understanding it in context with related terms like radius and aaa is essential for answering scenario-based questions correctly.