In order to expand their business, AI has signed agreements with other Internet service providers all over the world to provide global access to its customers. Each ISP that AI works with has a standards-based RADIUS server installed on their network. If the other ISPs also have a RADIUS proxy installed, they can forward authentication requests to AI for access verification. This feature, commonly referred to as roaming, lets AI customers transparently use a wide range of Internet service providers while maintaining a financial commitment to only AI. Acme, Inc. also uses Internet Authentication Services to provide a dial-up Virtual Private Network to selected corporations.
Note
The Commercial edition of Internet Authentication Services includes proxy capability.
The following diagram illustrates how an Internet service provider can use a recommended configuration of Internet Connection Services for RAS on their network.