Internet Authentication Service
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Internet Authentication Service (IAS) provides centralized user authentication and authorization, centralized auditing and accounting. While Routing and Remote Access Service (RRAS) security is sufficient for small networks, a large enterprise often needs a dedicated infrastructure for authentication. RADIUS is a standard for dedicated authentication servers. Windows Server 2003 includes Microsoft Internet Authentication Service (IAS), an implementation of RADIUS server. IAS supports authentication for Windows-based clients, as well as for third-party clients that adhere to the RADIUS standard. IAS stores its authentication information in Active Directory (AD), and you can manage it with Remote Access Policies. While IAS requires the use of an additional server component, it provides a number of advantages over the standard methods of RRAS authentication. These advantages include centralized authentication for users, auditing and accounting features, scalability, and seamless integration with the existing features of RRAS.
Logging
By default, IAS logs to local files (%systemroot%\LogFiles\IAS\*) though it can be configured to log to SQL as well (or in place of).When logging to SQL, IAS appears to wrap the data into XML, then calls the stored procedure report_event, passing the XML data as ntext... the stored procedure can then unwrap the XML and save data as desired by the user.
External Links
- [Word Document (whitepaper?) from Microsoft explaining IAS Logging]
- [Article describing how to log IAS (RADIUS) + DHCP to SQL]
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