Radius Definition Networking protocol that authorizes and authenticates users who access a remote network. Screen overview Standard attributes Class : class name (readOnly field). Enabled : if it is checked (selected option is Yes) that protocol will be enabled. Authentication port : UDP authentication port. This port is used to log in. Accounting port : UDP authentication port. This port is used to manage the session, when the session starts and when finishes. Enable PAP (unsecure) : authentication protocol. The password to send is unencrypted. Enable CHAP :  authentication protocol. The password to send is encrypted. Enable MS CHAP v2 :  authentication protocol.