Fnbam_denied

Digital banking relies heavily on tokens (digital keys) to keep a user logged in.

It often appears in conjunction with EAP-MSCHAPv2 or EAP-TTLS errors, particularly when integrating FortiGate with third-party multi-factor authentication (MFA) tools like DUO or RADIUS servers. Primary Causes of FNBAM_DENIED fnbam_denied

Ensure the RADIUS policy allows OTP and that the FortiGate is configured for EAP. Scenario B: FortiClient 7.4.3 GA Bug Digital banking relies heavily on tokens (digital keys)

A known bug exists in FortiClient 7.4.3 GA causing authentication failure after SAML auth, where the client ignores EAP requests. fnbam_denied

: Use the diagnose test authserver command to verify if the FortiGate can talk to your RADIUS/LDAP server independently of the VPN tunnel.