Nokia A032 Manuale Utente

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Nokia A032 Addendum
on the protocol specification. The protocol 
specification uses name Network Access Server 
(NAS) for the client of the Radius server. On our 
WLAN radius security scheme, the AP is 
equivalent to the NAS on the protocol 
specification so the AP is a client of the Radius 
server (in other words, the NAS functionality is 
build into the AP).
The third component is the Radius server, 
which takes care of deciding if the clients 
should be granted access to the network. 
Usually, there is a database attached to the 
Radius server implementation, which holds the 
list of the authorized clients. Radius server is a 
stateless system that receives packets and 
responds to them right away. If state 
information is needed, it is included in the 
response. When clients receive the state 
information, this includes the state of its 
response packet.
The fourth component is the proxy server. It 
receives requests from the NAS and either 
processes them by itself or sends them to 
another Radius server. This makes it possible to 
distribute the processing of Radius requests, 
allowing load balancing and making the 
security solution more fail safe.