Understanding IAS

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Understanding IAS

This section covers:

• Components of a RADIUS infrastructure

• Realm names

• IAS and tunnels

• Managing multiple IAS servers

• Network access authentication and certificates

• Securing IAS

• Vendor-Specific Attributes

• Authentication methods

• Remote Access Policies

• Connection Request Processing

• Remote Access Logging

Note

• You can configure IAS in Windows Server 2003, Standard Edition, with a maximum of 50 RADIUS clients and a maximum of 2 remote RADIUS server groups. You can define a RADIUS client using a fully qualified domain name or an IP address, but you cannot define groups of RADIUS clients by specifying an IP address range. If the fully qualified domain name of a RADIUS client resolves to multiple IP addresses, the IAS server uses the first IP address returned in the DNS query. With IAS in Windows Server 2003, Enterprise Edition, and Windows Server 2003, Datacenter Edition, you can configure an unlimited number of RADIUS clients and remote RADIUS server groups. In addition, you can configure RADIUS clients by specifying an IP address range.