Summary

As an overview here are some key points on virtual servers:

• FreeRADIUS has two virtual servers enabled by default. They are called default and inner-tunnel.
• Virtual servers are defined inside the sites-available directory and activated by linking it to the sites-enabled directory.
• The use of a specific virtual server can be specified in the global listen and client sections.
• A virtual server can alternatively contain local listen and client sections.
• There are example virtual servers available in the sites-available directory, which can be used as templates for special requirements.

The various sections inside virtual servers make use of modules. In the next chapter we will take a more in-depth look at the use of modules.

Pop quiz – virtual servers

1. Your need to evaluate a new VPN server that supports RADIUS. This server should use a separate SQL database to store user detail. How can you use a virtual server on your current FreeRADIUS deployment to test this VPN server with minimum...