Internet Authentication Service

The Internet Authentication Service (IAS) in Microsoft® Windows® 2000 is the Microsoft implementation of a Remote Authentication Dial-in User Service (RADIUS) server. IAS performs centralized authentication, authorization, auditing, and accounting (AAAA) of connections for dial-up and virtual private network (VPN) remote access and demand-dial connections, and it can be used in conjunction with the Windows 2000 Routing and Remote Access service. IAS enables the use of a single or multiple vendor network of remote access or VPN equipment.

In This Chapter

IAS Overview

RADIUS Protocol

IAS Authentication

IAS Authorization

IAS Accounting

IAS Authentication and Windows Domain Modes

Security Considerations

Performance Tuning and Optimization