Technical Tip: Packet duplication in SD-WAN

mgoswami · 04-17-2025

Description This article describes how to troubleshoot the 'duplicate entry' error encountered when adding a new item to the FortiSIEM Watchlist. Scope FortiSIEM. Solution This error can occur if the entry value trying to add already exists in the Wa...

mgoswami · 01-09-2025

Description This article describes how to handle the error 'Cannot find key for' the principal in Kerberos Authentication. Scope FortiGate, FortiProxy Solution Kerberos authentication fails when it cannot locate the correct key for the principal in t...

mgoswami · 12-17-2024

Description This article describes how to read and understand the Kerberos authentication log on FortiGate. Scope FortiGate. Solution This sample log is from FortiGate with IP-based transparent proxy configuration and using Kerberos authentication. T...

mgoswami · 12-16-2024

Description This article describes a possible error that can be seen in the WAD debug when authenticating a user with Kerberos. Scope FortiGate. Solution This error is seen when the time difference (skew) between the client machine and Service and th...

mgoswami · 12-02-2024

Description This article describes why an endpoint displays a pop-up prompting the installation of a version of FortiClient that is already installed. Scope FortiClient EMS. Solution This issue occurs when FortiClient is manually installed on an endp...

mgoswami · 11-28-2024

Hello, What network ports are allowed between endpoints and EMS ? Please check the Firewall and ensure that following ports are open "TCP 135, 445, and 10443 ports between EMS Server". Regards, Manosh

mgoswami · 01-04-2024

Hi, Yes the above mentioned steps are correct. Additionally, you may also refer to these links for any configuration in NAT mode and Transparent Mode VDOM:https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-create-VDOM-with-Transparent-m...

mgoswami · 01-04-2024

Hi, Here are some of the key features of Fortimanager:https://help.fortinet.com/fmgr/50hlp/56/5-6-1/FortiManager_Admin_Guide/0300_FMG_architecture/0400_Key%20features+.htm

mgoswami · 10-13-2023

Hi, If you have disabled Split Tunneling for SSL VPN, in that case, on the Policy which you have created for the SSL VPN users to access Internet, you would need to call the SAML USER GROUP. This group will be for the non gallery application which yo...

mgoswami · 10-12-2023

Hi, You may login to your training portal and go to your Profile. You will see the certificate there. BR, Manosh

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Troubleshooting Tip: Unable to add entry to Watchlist - duplicate entry detected

Troubleshooting Tip: How to resolve 'Cannot find key for' error in Kerberos Authentication

Technical Tip: Understanding Kerberos Authentication logs in FortiGate

Troubleshooting Tip: Time Skew error in Kerberos Authentication

Technical Tip: Endpoints display a pop-up prompting the installation of the same FortiClient version, even though it is already installed

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