Protocol for implementing AAA. It centralizes authentication, authorization and auditing. It:
- Is primarily for network access
- VPN access
- Router, Switch, Firewall access
- Server authentication
- IEE 802.11 network access
- Combines authentication and authorization
- Encrypts only the password in the access-request packet
Completely open protocol, that is partially encrypted and communicates over
udp/1812andudp/1813.