Right at the start of the year, we’re also releasing the new cheat sheet for FortiOS version 7.6! If you have an idea for the cheat sheet, please let us know in the comments.We wish you good luck with troubleshooting.
CheatSheet – FortiOS v7.6
FortiOS 7.6.5: What you should know about the new mature release
Fortinet has officially transitioned FortiOS 7.6 into the “Mature” phase with the release of FortiOS 7.6.5. For many administrators, this is the green light to begin upgrading production environments. However, this release isn’t just about bug fixes, it introduces several mandatory enforcement measures designed to harden security. If you are…
SAML Authentication not working after upgrade to 7.2.12/7.4.9/7.6.4
After upgrading the Fortigate to 7.2.12, 7.4.9 or 7.6.4 the SAML authentication (for e.g. IPsec or SSL VPN) is not working anymore. The authentication process takes a very long time and then results in a timeout. Reason for this is that Fortinet has started to verify the signature for SAML…
When the Primary Gets Too Dominant – HA Configuration Restore Issue on FortiOS 7.6.4
We encountered an interesting — and quite disruptive — behavior in a High Availability (HA) setup. Situation Overview When restoring a configuration on one cluster node, the entire configuration of the other nodes was overwritten — including settings that are supposed to remain unique and unsynced, such as hostnames, management…
FortiGate 90G Gen2 FortiLink Fix: Solving the interface A & B issue
Update 27.07.2026: Testing with an FG-90G running FortiOS 7.6.7 confirms that Port A and Port B can once again be selected as FortiLink interfaces. To enable this, Interfaces A and B must first be removed from all firewall policies, their role changed from WAN to Undefined, and their IP configuration…
Fortinet Certification Update: NSE Levels Return & Retired Exams
Starting October 15, Fortinet is introducing a significant update to its certification program — reintroducing the well-known NSE level names, while retiring some exams and launching new ones. In this blog post, you’ll find everything you need to know about the updated NSE path, requirements for FCP and FCSS certifications,…
FortiGate and BGP Blackhole Routing
Last Update: 31.12.2025 Spoiler alert: Current FortiOS versions do not allow BGP blackhole routing out of the box. But we have two possible workarounds ready for you.
FortiOS 7.6.3 – SSL VPN tunnel mode is no longer supported!
Last Updated: 20. June 2025 Fortinet has released FortiOS 7.6.3 on April 17th. There are a lot of resovled issues but again another feature was completely removed. After the SSLVPN (tunnel- and web-mode) has been completely removed on models with only 2GB RAM and the small G models, now SSLVPN…
FortiGate and iCloud Private Relay
Since the introduction of iCloud Private Relay, we have received numerous questions—ranging from how it works to its impact on users and businesses. Now, about a year later, we have decided to publish a detailed blog article explaining its proper use and highlighting key aspects. In this post, you’ll learn…
Achtung: neues Default-Verhalten bei Fortigate Konfigurationen mit One-Arm Interface – z.B. mit der ACI Fabric
Einleitung One-Arm-Installation bedürfen einem speziellen Augenmerk, insbesondere wenn es um den Redirect vom Traffic geht – also Traffic, der über das gleiche logische Interface rausgeschickt wird, wo er auch reingekommen ist. Auf der Fortigate wird der Redirect Traffic per default erlaubt, so dass der Traffic ohne weitere Prüfung durch die…