Technical Tip: How to setup LACP between FortiGate...

kaman · 12-23-2025

Description This article describes the behaviour behind the out-of-sync issue due to 'system.central-management' in an HA cluster. Scope FortiGate. Solution Devices in an HA cluster may become out of sync due to various factors, such as system upgrad...

kaman · 12-04-2025

Description This article describes the steps needed to resolve the Kerberos authentication error, indicating 'No key table entry found for HTTP/fortiproxy'. Scope FortiGate, FortiProxy. Solution Kerberos authentication fails if the FortiGate device i...

kaman · 09-26-2025

Description This article describes a situation where FortiGate Cloud sends a Software End Of Support (EOS) notification for v7.0, despite the device running on v7.2, v7.4 or v7.6. Scope FortiGate. Solution FortiGate Cloud displays a Software End of S...

kaman · 09-19-2025

Description This article describes an issue where editing or deleting a firewall policy fails and results in an error message '14 - Please unset 'dstaddr' first' and 'can not config the object since either the object or the referenced objects are bei...

kaman · 09-04-2025

Description This article describes an issue where the Source field under firewall policy displays only IPv6 Address and IPv6 Address Group, while IPv4 Address and Address Group entries are missing. Scope FortiGate. Solution Attempting to add a new ad...

kaman · 12-28-2025

Hi pradankho, You can log-in to https://training.fortinet.com/course/ and select the course, you will see "Study Guide (pdf)". Reference Links:https://training.fortinet.com/local/staticpage/view.php?page=library_network-security-support-engineerhttps...

kaman · 12-28-2025

Hi viskanmai, If IPsec is being used on a public cloud environment (Azure, AWS) check the DOS policy and anomaly log, as slow throughput can be caused by UDP 4500/500 drops. Change the threshold value or disable the anomaly or the DOS policy to fix t...

kaman · 12-28-2025

Hi jonsukben, Please refer to the link below, it appears to be the same issue: https://community.fortinet.com/t5/Support-Forum/FortiOS-7-4-8-Port-Forwarding-Performance/td-p/424701 Regards,Aman

kaman · 12-28-2025

Hi einchewon, As you mentioned, after upgrading to 7.2.12, you are unable to ping the destination via the tunnel. Please run the below command and share us the output: diagnose vpn tunnel list name get router info routing-table details get router inf...

kaman · 12-21-2025

Hi Potato168, Please refer to the documents below for more information: https://docs.fortinet.com/document/%2520fortigate/6.0.0/handbook/675134/web-caching-topologies https://docs.fortinet.com/document/%20fortigate/6.0.0/handbook/657294/reverse-proxy...

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Troubleshooting Tip: HA cluster out-of-sync issue due to 'system.central-management' mismatch

Technical Tip: Fixing the 'No key table entry found for HTTP/fortiproxy' error in Kerberos Authentication

Troubleshooting Tip: End Of Support (EOS) notification appears for FortiOS v7.0 despite the device running v7.2,v7.4 or v7.6

Troubleshooting Tip: Unable to Delete or Edit any Firewall Policies due to error code '14'

Technical Tip: IPv4 Address and Address Group not displayed in Source Field of Firewall Policy

Re: Learining to NSE4 exam.

Re: IPSec issues on 7.4.9

Re: FortiOS 7.4.8 Port Forwarding Performance

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Technical Tip: How to setup LACP between FortiGate...

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