Technical Tip: How to install FortiGate VM on Prox...

johnathan · 01-04-2026

Description This article describes how to test if the DoS policy is working by using 'hping3' on Linux and PowerShell on Windows. Scope FortiOS, DoS Policies. Solution The easiest way to test if a DoS policy is successfully blocking traffic is by usi...

johnathan · 12-31-2025

Description This article describes the simplest way to use the same certificate for multiple Captive Portals. Scope FortiOS. Solution To use the same certificate for Captive Portals on different interfaces, they all need to share the same FQDN but re...

johnathan · 12-20-2025

Description This article describes how to do a POST (Power-On Self-Test ) on the FortiGate if it is failing to boot up. Scope FortiGate hardware models. Solution When the FortiGate is failing to boot up, or a specific feature in the BIOS needs to be ...

johnathan · 09-16-2025

Description This article describes why a user might get 'ISDB license expired' when running an update debug, even though the licenses are valid. Scope FortiOS. Solution If the Internet Service database is failing to be downloaded, usually an update d...

johnathan · 08-31-2025

Description This article describes the CLI behavior of a FortiGate running FortiOS v7.6.4 when managed through the FortiGate Cloud portal. Scope FortiGate v7.6.4. Solution When accessing the FortiGate running FortiOS v7.6.4 via FortiGate Cloud portal...

johnathan · 09-02-2025

'login-timeout' might achieve what you are looking for: https://community.fortinet.com/t5/FortiGate/Technical-Tip-SSL-VPN-timers-explanation-and-SSL-VPN-Login/ta-p/203615

johnathan · 08-27-2025

SSLVPN vulnerabilities are only applicable to the SSLVPN. 

johnathan · 08-27-2025

Generally you can only configure one subnet on one interface on the FortiGate. There are exceptions to this, but it is default behavior for a reason. I think it would be helpful if you have a diagram as it is kinda unclear what you are trying to achi...

johnathan · 08-27-2025

This article covers your scenario: https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-use-one-certain-IP-pool-per-a-SD-WAN-member/ta-p/240694

johnathan · 07-16-2025

If ease of management and visibility into your network are priorities, you can look into using the FortiSwitch. Once integrated with the FortiGate, all configuration for the switches would be done via the FortiGate. They aim to have it be as seamless...

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Technical Tip: How to test and verify if the DoS policy is working using 'hping3' from Linux and Powershell from Windows

Technical Tip: Configuring a shared FQDN and certificate for the Captive Portal without using a loopback interface

Technical Tip: Performing a Power-On Self-Test (POST) on FortiGate devices

Technical Tip: 'ISDB license expired' inside of an update debug, even though the licenses are valid

Technical Tip: CLI Behavior When Using FortiGate Cloud to Manage a FortiGate on v7.6.4

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Technical Tip: How to install FortiGate VM on Prox...

Re: What happens if one Fortigate device expires l...

Re: INFO FortiIsolator

Re: Fortigate 7.4 IKEv2 Dial-In Clients cannot rea...

Re: Office365 apps hang at launch for timeout ~26 ...

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Re: What happens if one Fortigate device expires l...

Re: will connected users be affected if I increase...

Re: Forced password change for SSL-VPN RADIUS user...

Re: FortiClient VPN update/upgrade

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