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‎10-15-2025
Last activity: Oct 16, 2025 12:51:45 AM
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Technical Tip: HA is out sync due to an IPsec interface IP on FortiGate-VM

10-18-2025
Description This article describes an expected behavior for FortiGates on a cloud platform, that HA becomes out of sync when an IP address is configured on an IPsec interface. Scope FortiGate-VM v7.4 and v7.6 in Cloud environments Solution This artic...

Technical Tip: PPPoE interface not passing traffic when first created

10-07-2025
Description This article describes a reported issue where a newly created PPPoE tunnel interface does not initialize correctly, preventing network access. Scope FortiGate v7.4. Solution There are two ways to configure a PPPoE interface: Create a new ...

Technical Tip: DNS traffic is allowed through captive portal without authentication

09-01-2025
Description This article describes an expected behavior where DNS traffic can successfully bypass captive-portal authentication on the FortiGate. Scope FortiOS. Solution When a firewall policy requires user authentication (for example, when captive-p...

Technical Tip: DNS Filter Profile Behavior with a DNS Response NXDOMAIN

07-10-2025
Description This article describes how the DNS filter profile behaves depending on the DNS response received from the DNS server. Scope FortiOS. Solution DNS response codes range from 0 to 5, but the most common response codes are: 0 – NoError: No er...

Technical Tip: Find the release date of FortiOS firmware versions

09-09-2024
Description This article describes how to find the date when the FortiOS firmware versions were released. Scope FortiGate. Solution Log in to Fortinet Support, select the Support button on the top, then in the drop-down menu select Downloads -> Firmw...
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