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jo_rang
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Staff
‎11-12-2025
Last activity: Nov 12, 2025 4:47:22 PM
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Troubleshooting Tip: FortiGate VM stops passing traffic when a new VDOM is created

10-24-2025
Description This article describes a scenario where a FortiGate Virtual Machine stops passing traffic when the Number of VDOMS created exceeds the maximum number of licensed VDOM. Scope FortiGate VM v7.2+. Solution Ensure that the VM has a VALID Lice...

Technical Tip: IS-IS neighbors stuck in INIT state when there are more than 42 neighbors

09-09-2025
Description This article describes a solution to the issue of IS-IS neighbors being stuck in the INIT status on FortiGate devices when there are more than 42 neighbors configured. Scope FortiOS v7.0, v7.2. Solution In a network environment where ther...

Troubleshooting Tip: IPsec VPN 'error 22:Invalid argument' message

06-24-2025
Description This article provides guidance on troubleshooting Site-to-Site VPN connectivity issues when Phase1 is down and the message 'error 22:Invalid argument' is seen in the IKE debugs. Scope FortiGate. Solution In this scenario, a Site-to-Site V...

Technical Tip: FortiGates in Belgium unable to resolve hostnames when using OpenDNS as DNS servers

05-22-2025
Description This article explains why DNS resolution might fail when the FortiGate is configured to use OpenDNS servers 208.67.222.222 or 208.67.220.220. Scope FortiGate. Solution FortiGates deployed in the Country of Belgium might face DNS resolutio...

Technical Tip: How to enable the XAuth Column in IPsec Monitor widget to identify users connected to remote access VPN

04-08-2025
Description This article describes the procedure to enable the XAUTH column in the IPsec monitor Widget to easily see the user ID associated with the dial-up IPsec connection. Scope FortiGate versions 7.0.x, 7.2.x, and 7.6.x. Solution The default vie...
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