UPDATE 16.30 CET: Cloudflare has resolved the issue. All workarounds can now be disabled, as they are no longer needed. The root cause has not yet been published. ERR_TIMED_OUT and ERR_EMPTY_RESPONSE being observed by Cloudflare Customers
Last Update 22.10.2026 Update – 11. September 2026: We received feedback from our partners indicating that the issue has recurred. Fortinet has confirmed the issue and provided the following response:
When a critical network issue occurs in a FortiSwitch environment – such as sudden disconnects, loop storms, or unexpected reboots like in a event featured in this article – the immediate reflex for many admins is to reboot or reset the equipment to restore connectivity. However, doing so clears vital…
Last updated: 15.06.2026 In the past few days, multiple of our resellers have reported issues where DNS resolution using the default Fortinet FortiGuard DNS servers (96.45.45.45 & 96.45.46.46) is not functioning as expected with DNS over TLS (DoT) on TCP/853.
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…
We have updated our CheatSheet for the FortiAnalyzer/FortiManager to the OS version 7.4. We still have the divided sections for FortiAnalyzer Logging, FortiAnalyzer Reporting and FortiManager with all of our regularly used commands and some CLI-based debug examples that are also featured in the official training materials. We hope that…
We have updated our cheat sheet for Palo Alto firewalls with all important commands for troubleshooting.It contains now all commands for PANOS 11.1. We have divided the cheat sheet into different sections like general commands, session debugging, service debugging and feature related debugging commands so that the needed commands can…
When configuring the Border Gateway Protocol (BGP) Router, you may encounter issues where dynamic routing doesn’t work as expected due to configuration problems. This article provides a handy set of troubleshooting commands to address these issues effectively.
In the last days we have had several support cases that suspiciously all had the same error description: many web servers can no longer be reached with the Chrome or Edge browser. In our cases typically the Webfilter feature from one of our firewalls has been involved. Right now we…
Last Updated: 29. January 2025 From time to time we face performance problems on FortiGate units in our daily support life. Most often the impacts of performance problems on the FortiGate are not typical. Or let’s say “not as an admin that is not familiar with FortiGates would expect”. The…
