FortiGate Memory and CPU Troubleshooting

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 expectations vary from high delay…

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FortiGuard Servers are not reachable

Update – 30. Oktober 2023: We received feedback from our partners that the issue probably occurred again today. Fortinet confirmed the issue, here is their response: Few cases have been reported to us with this issue during the weekend, this seems to be issue with Fortiguard anycast when Daylight Saving…

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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…

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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.

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