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ksivadas · 11-03-2025

Description This article describes the expected refresh behavior of route timers in the FortiGate routing table when a prefix is learned via two paths using the same dynamic routing protocol. Scope FortiGate. Solution When a route prefix is learned f...

ksivadas · 09-23-2025

Description This article describes a known issue related to guest management on FortiGate. Specifically, guest credentials do not expire after selecting the 'Expire' button in the GUI. Scope FortiOS v7.4.8, v7.6.3, and earlier. Guest Management on Fo...

ksivadas · 09-02-2025

Description This article addresses a Known Issue involving a WPA2-Enterprise SSID using RADIUS authentication. The FortiGate (acting as the WiFi controller) can receive multiple Fortinet-Group-Name attributes from the RADIUS server and tries to creat...

ksivadas · 07-15-2025

Description This article addresses the 'Configuration File Error' that can occur when uploading CLI scripts to FortiGate devices. The error may present even if the same script executes successfully in the CLI. Scope FortiGate. Solution When a 'Config...

ksivadas · 01-12-2025

Description This article explains how to check the external IP addresses hitting the WAN IP address configured on the FortiGate without using live debugging and packet capture. Scope FortiGate. Solution Scenario 1: WAN IP, which is not part of a virt...

ksivadas · 01-02-2025

10. Setting the ISDB to "on-demand". In this way, the firewall will download only the ISDB entries that will be used in policies and other configurationsconfig sys globalset internet-service-database on-damand (default is standard)end

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Technical Tip: Behavior of Route Timer for Dynamic Routes with Multiple Paths for Same Prefix in Routing Table

Troubleshooting Tip: Guest management: guest credentials not expiring after manual expiry in the GUI

Technical Tip: WSSO Firewall Authentication Session Not Created using RADIUS authentication

Troubleshooting Tip: Resolving 'Configuration File Error' When Uploading CLI Scripts on FortiGate

Technical Tip: Monitoring Traffic Targeting FortiGate’s WAN Interface without Live Packet Capture or Debugs

Technical Tip: Low-end FortiGate models with RAM ≤ 2GB entering conserve mode due to increased ISDB database

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