Technical Tip: IPSec VPN is established without NA...

ssriswadpong · 09-22-2025

Description This article describes the reason why the DHCP relay is blocked when the DHCP server IP is destination NATed after upgrading to v7.4.4 or later. Scope FortiGate. Solution Sample of affected topology: The DHCP relay is configured on FortiG...

ssriswadpong · 08-26-2025

Description This article provides commands for troubleshooting FortiGuard-related communications initiated by FortiNDR, along with sample command outputs Scope FortiNDR. Solution Check DNS settings, FortiGuard settings, and route configuration: get s...

ssriswadpong · 08-24-2025

Description This article describes a possible cause of the issue where a newly added FortiGate can connect to the internet but appears as offline on the Overlay-as-a-Service portal. Scope FortiGate, Overlay-as-a-Service. Solution FortiGate must be ac...

ssriswadpong · 07-17-2025

Description This article discusses sample logs generated when demo mode is enabled. Scope FortiNDR. Solution On FortiNDR-VM, the demo mode can be enabled by the command: execute demo on To disable: execute demo off After enabling the demo mode, Forti...

ssriswadpong · 03-21-2025

Description This article describes the scenario where the IPSec VPN is established without NAT-Traversal when there are multiple tunnels with the same proposal Scope FortiGate. Solution Topology: The HQ FortiGate has 2 tunnels for 2 branches with the...

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Technical Tip: DHCP relay is blocked when the DHCP server IP is destination NATed after upgrading to v7.4.4 or later

Technical Tip: Troubleshooting FortiNDR connectivity to FortiGuard

Technical Tip: Newly added FortiGate status offline/down in Overlay-as-a-Service portal

Technical Tip: Sample logs generated by demo mode