Update 18.09.2023: The Problem has been solved. The servers are up and running again.
FortiGuard DNS Servers are Offline
FortiOS 7.4.1 is Released
Last Friday the first patch for FortiOS 7.4 has been released. As always with a brand new minor or major FortiOS version a lot of issues have been resolved and a lot of new features have been introduced. No Security Fabric root for FG60E/F anymore Interestingly, however, we found an…
CVE-2023-27997 – FortiOS & FortiProxy – Heap buffer overflow in sslvpn pre-authentication
Please note the vulnerabilities in Fortinet products published in June. In particular, we would like to mention the vulnerability in FortiOS, which affects SSLVPN access and poses a major threat with a CVSSv3 score of 9.2. Fortinet PSIRT: https://www.fortiguard.com/psirt/FG-IR-23-097CVE: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-27997 Affected are FortiOS versions 6.0 to 7.2. Fortinet has already…
New Fortinet NSE Certification Program
Last Update 11.08.2025: Update 17.07.2025: Please note, that this blog post is outdated per 15th of October 2025, since Fortinet is re-designing the certification landscape again. You can find the latest information under https://www.fortinet.com/nse-training-update . During Accelerate 2023, Fortinet has introduced the new Fortinet NSE Certification Program which will come…
FortiGate Registration via WebUI: Reseller field is empty
In the last two weeks we received more and more reports about the problem that the reseller list remains empty when registering a FortiGate via WebUI, even if the correct country (Switzerland in our case) is selected. The problem was also reported to us with the Country / Region field,…
New Fortinet Vulnerabilities (March 2023)
Most of you have already read about the latest release of Fortinet’s new PSIRT advisories. There are 15 new vulnerabilities for FortiOS and other products with severity level from low up to critical. We strongly recommend that you checkt the PSIRT advisories and update your Fortinet products to one of…
Swisscom Centro Business: Incoming HTTPS-Sessions and SSLVPN stop working
In the last two weeks we have received many support requests because of non-functioning SSL connections from our Fortinet, Palo Alto Networks and Watchguard customers. Incoming SSL connections on port tcp/443 suddenly stop working. These can be SSLVPNs, Global Protect connections, port forwardings (VIPs, Destination NAT) for internal web servers…
How to correctly power FortiAPs
Last update: 16. April 2026 We noticed some interesting facts about the new large FortiAP G-Series and later models that we would like to share with you: When we studied the datasheet and the quick start guide of these new access points, we were surprised to see a drastic increase…
How to upgrade a FortiClient EMS free-, trial- or evaluation-license
FortiClient EMS is a central endpoint management solution from Fortinet. There are three possible license types and it is not always possible to change the license state between different license types. This article will bring light into the dark of FortiClient EMS license upgrading. Free trial license A free trial…
New FortiGate Vulnerability – CVE-2022-42475
Today Fortinet has published a new critical vulnerability in their FortiGate products. A successful attack allows arbitrary code or commands to be executed. The problem exist in the SSLVPN module – and you might be vulnerable if you are using SSLVPN and not running the latest patch release of the…
