Limited throughput on network devices is a common problem. We handle a lot of cases with thtroughput issues and have written a guide on how we recommend to start troubleshooting in such cases.
FortiGate throughput troubleshooting
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Last Update 11.08.2025: Update 17.07.2025: Please note, that this blog post is outdated per 15th of October 2025, since Fortinet is re-designing the certification landscape again.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…
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…
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…
FortiCloud: Check your email or token application for the security code
Fortinet has changed it’s SSO system underneith. Therefore, the shown message has changed. We have documented the new behaviour in this blog post: https://blog.boll.ch/fortinet-account-your-account-has-been-locked/ The single-sign-on accounts for Fortinet websites are used for sites such as support.fortinet.com and forticloud.com. There are a whole lot of other Fortinet sites that use…
Top 10 FortiGate mistakes we see in our daily support life
According to this title you are expecting some click-bait content, right? Nope. We’re still the Boll Engineering Tech team here… The configuration inputs below are problems we face frequently in our daily support life. Also some of the points mentioned below are frequently asked questions that pop up during our…
CheatSheet – FortiOS v7.2
We are happy to present you the new cheat sheet for FortiOS version 7.2. Most commands have remained the same.A bigger change is that the Packet Sniffer and the Debug Flow are now also available in the WebUI under Network > Diagnostics. We wish you good luck with troubleshooting.