What are two characteristics of the RADIUS protocol? (Choose two.)the use of UDP ports for authentication and accountingthe use of TCP port 49the separation of the authentication and authorization processesencryption of the entire body of the packetencryption of the password only

Sure, let's break down the characteristics of the RADIUS (Remote Authentication Dial-In User Service) protocol step by step:

1. The use of UDP ports for authentication and accounting:

   • RADIUS typically uses UDP (User Datagram Protocol) for communication. Specifically, it uses UDP port 1812 for authentication and authorization, and UDP port 1813 for accounting. Some older implementations might use ports 1645 and 1646, respectively.

2. The use of TCP port 49:

   • This is not a characteristic of RADIUS. TCP port 49 is used by the TACACS+ (Terminal Access Controller Access-Control System Plus) protocol, not RADIUS.

3. The separation of the authentication and authorization processes:

   • This is not a characteristic of RADIUS. In RADIUS, authentication and authorization are combined into a single process. When a user is authenticated, they are also authorized for certain actions based on the policies defined on the RADIUS server.

4. Encryption of the entire body of the packet:

   • This is not a characteristic of RADIUS. RADIUS does not encrypt the entire body of the packet. Instead, it only encrypts the password in the Access-Request packet.

5. Encryption of the password only:

   • This is a characteristic of RADIUS. RADIUS encrypts the password in the Access-Request packet to protect it during transmission. However, other parts of the packet, such as the username and other attributes, are not encrypted.

Based on the above analysis, the two correct characteristics of the RADIUS protocol are:

1. The use of UDP ports for authentication and accounting.
2. Encryption of the password only.