Requirements (2/4) Proposals MUST support replay protection. Existing mechanisms for replay protection of RADIUS messages are inadequate. Crypto-agility solutions need to specify mandatory-to-implement algorithms for each mechanism. Proposals need to demonstrate backward compatibility with existing implementations. A solution needs to be able to send packets that a legacy RADIUS client or server will receive and process successfully. A solution needs to be capable of receiving and processing packets from a legacy RADIUS client or server. |