Realms

ClearBox Server has built-in support of realms that allow the administrators to define several contexts in which to process authentication and accounting requests. The concept of realm as it is commonly intended in RADIUS environments is extended by ClearBox: It makes it a completely autonomous RADIUS processing unit within a single server, able to perform authentication and accounting independently from other units (realms) on the same server; this includes the possibility of working with different user databases, accounting databases, etc. If you're an ISP, and you're reselling ports on your access servers to third parties whose users you can recognize by some prefix, suffix, or a particular dialed number, you're probably already using RADIUS realms of some kind.

ClearBox can choose a realm for a request handling in several ways. Realm can be chosen from a user name or from any other attributes (such as Calling ID or Caller ID).

ClearBox Server may transform user names (i.e. rewrite them) from the form in which they are received into a form in which they may be properly processed. This may be necessary as the form in which users supply their names to the NAS device (and hence to the RADIUS server), is not always compatible with the form which ClearBox Server requires to apply its own rules for proxy forwarding, or with the form which the authentication system requires.

See how to set realm selection.