Technical Tip: BGP is flapping

rbarnes · 01-09-2025

Description This article describes a scenario where a BGP route comes from an unexpected interface. In this scenario, an IPsec VPN tunnel setup with BGP is used. Scope FortiGate. Solution A BGP route is coming from an unexpected interface. The expect...

rbarnes · 01-01-2025

Description This article describes how to handle an issue where an HA cluster is configured and will not synchronize local certificates and other configuration parts. Scope FortiGate. Solution The HA cluster is not synchronizing certificates. diag de...

rbarnes · 12-11-2024

Description This article describes how to resolve an issue where the SSL VPN web portal is configured with an RDP widget. When trying to connect to the RDP widget on the SSL VPN portal, the connection is closed. Error Message: Scope FortiGate. Soluti...

rbarnes · 11-29-2024

Description This article describes the case when: FortiGate is configured in Azure. Passive FTP traffic failing to get directory listing. Passive FTP failing to transfer files. Scope FortiGate Azure VM. Solution VIP is already configured for the serv...

rbarnes · 09-10-2024

Description This article provides a scenario where there is a BGP setup between 2 devices. One or both FortiGates BGP is flapping up and down. Scope FortiGate. Solution A common cause of this is ISP connectivity or packet loss. Step 1. Check connecti...

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Troubleshooting Tip: BGP route coming from an unexpected interface

Troubleshooting Tip: HA certificates will not synchronize with error code '(0xc23b5e0) peer closed the connection'

Troubleshooting Tip: RDP widget not connecting to a server

Troubleshooting Tip: Passive FTP not functioning correctly with Azure FortiGate VM