Diference betwen default Windows and Radius autentification

!30

I have confgiured , for my 70-291 , a DC with routing and access role , and I'm am

, what's the diference betwen . RADIUS and Windows authentification ? can someone expliain me ?

Thank's ! :P

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Danman32

Windows authentication uses Windows (usually AD) security principles and their configuration to determine what access the user should get.
RADIUS authentication uses a RADIUS server to determine if and what access a login should get. Now the RADIUS server in turn could use AD to get information to authenticate and authorize the RRAS login.

IAS is essentially a RADIUS server service that comes with Windows 2K/2K3 and can optionally be installed and used.

royal

Lets say you had 10 RRAS servers. You'd have to manage authentication on each of those RRAS Servers. Instead, you can choose 1 server as your Radius server and have all RRAS servers point to that Radius server for authentication. Basically, you're making it so you only have to manage 1 server for authentication instead of 10.

Also, on very large networks, you can also have a radius proxy forward authentication requests to multiple Raidus servers for load balancing/fault tolerance.

IAS is Microsoft's implementation of Radius.