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

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 a workaround for the CLI behavior when using FortiGate Cloud to manage a FortiGate on v7.6.4. Scope FortiGate Cloud v7.6.4. Solution When accessing the CLI inside the Web GUI via FortiGate Cloud, the default VDOM is...

johnathan · 08-29-2025

Description This article describes how to troubleshoot a route not being installed in the FIB even though it is selected in the routing table. Scope FortiOS. Solution Under certain circumstances, a static route may be chosen as the best route but nev...

johnathan · 08-27-2025

Description This article describes a scenario where the SDNS servers are replying to the FortiGate for DNS ratings, yet the DNS filter is still reporting rating errors Scope FortiOS, DNS filter Solution When looking at the logs for the DNS filter, an...

johnathan · 08-26-2025

Description This article describes how to resolve a scenario where ISDB lookups seem to be failing, but the ISDB database is installed correctly. Scope FortiOS v7.2.10 and earlier. Solution Under certain circumstances, when using an Entry-level Forti...

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: '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

Troubleshooting Tip: Static route is selected as a valid route inside the RIB, but is never installed into the FIB

Troubleshooting Tip: DNS filter is giving rating errors, even though there is connectivity to the SDNS servers

Technical Tip: ISDB lookups failing on entry-level platforms, despite the database being installed correctly

Re: FortiClient vpn-ssl on weak connectivity

Re: Does opening 9443 for SAML on FortiGate potentially open up SSL security flaws?

Re: Is it possible to put a Fortigate in the middle of a network with arbitrary parts on either side

Re: SDWAN with NAT

Re: Best Switch?

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

Re: INFO FortiIsolator

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

Re: What's happen when FortiAnalyzer IOC Subscript...

Re: Is there an option to configure client server ...

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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