User Manager/Routers

User Manager must know with which routers (IP addresses) to communicate. User Manager is like a judge - it receives questions and must give answers. For example:

HotSpot: "Is user 'nick' allowed to use hotspot?"

User Manager: "Yes, but only 2 hours. And give him IP 192.168.0.40".

If an unknown router asks something, User Manager ignores it.

Router table contains information about known routers which are allowed to ask User Manager questions.

Router data contains:

• Name. Name of the router. Informational, must be unique per subscriber;
• IP address. Address of the router;
• Shared secret. Password used for authentication;
• Log events. Specifies which events must be written to log.