Accessing and Debugging FortiGuard Services - FortiGuard Distribution Network (FDN)

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The FortiGuard Distribution Network (FDN) is a geographically diverse network operated by Fortinet Inc. that provides FortiGuard Antivirus (AV) and FortiGuard Intrusion Prevention System (IPS) updates in addition to FortiGuard Web Filtering and FortiGuard Antispam services to the FortiGate, FortiManager, FortiLog, FortiClient and FortiMail line of products.

This document explains the components of the FortiGuard Distribution Network (FDN) and how FortiGate units and other Fortinet products connect to and interact with the FDN. This document also describes the debugging commands and diagnostic methods that can be used if a Fortinet product, such as a FortiGate unit, has problems connecting to and using FortiGuard services.

This document primarily focuses on the interaction of the FortiGate product line with the FDN. The interaction of the FDN with the other products (including FortiMail, FortiClient, and FortiManager is very similar).