RADIUS uses the UDP transport protocol to communicate.
- This means Telnet cannot be used to connect to a RADIUS server to see if it’s running. Telnet uses TCP.
- RADIUS can use TCP but it is only practical between very large traffic systems.
- The use of encryption limited to authentication, as described, results in a classification of the product NOT in Cat. 5, Part 2. In that case, you should review other Categories on the CCL (e.g., Cat. 4 or Cat. 5, Part 1). If it is not described in any other Category then it can be classified as EAR99.