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Troubleshooting: FortiGate and RADIUS

RenĂ© Jorissen on December 12, 2025 0 Comments • Tags: #authenticate #fnbamd #fortigate #radius

I recently encountered a strange case where RADIUS authentication on a FortiGate cluster was failing on the secondary node. The cluster uses multiple VDOMs configured in a vcluster, and each FortiGate has its own out-of-band management IP. Authentication had been working fine previously. On the secondary FortiGate, I enabled debugging to see if authentication requests … Read More