What are three characteristics of the RADIUS protocol? (Choose three.)
- utilizes TCP port 49
- is an open IETF standard AAA protocol
- uses UDP ports for authentication and accounting
- is widely used in VOIP and 802.1X implementations
- separates authentication and authorization processes
- encrypts the entire body of the packet
Other case:
- utilizes TCP port 49
- uses UDP ports for authentication and accounting
- supports 802.1X and SIP
- separates the authentication and authorization processes
- encrypts the entire body of the packet
- is an open RFC standard AAA protocol
Explanation: RADIUS is an open-standard AAA protocol using UDP port 1645 or 1812 for authentication and UDP port 1646 or 1813 for accounting. It combines authentication and authorization into one process; thus, a password is encrypted for transmission while the rest of the packet will be sent in plain text. RADIUS offers the expedited service and more comprehensive accounting desired by remote-access providers but provides lower security and less potential for customization than TACACS+.
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