2.4.2 Proxying

Proxying is a mode of operation where a RADIUS server forwards incoming requests from a NAS to another RADIUS server, waits for the latter to reply, and then forwards the reply back to the requesting NAS. A common use for such operation mode is to provide roaming between several internet service providers (ISPs). Roaming permits ISPs to share their resources, allowing each party's users to connect to other party's equipment. Thus, users traveling outside the area of one ISP's coverage are still able to access their services through another ISP.

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