Fortigate - Workaround Blast Radius Mitigation
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In versions 7.2.11, 7.4.6 and 7.6.1 Fortigate introduced mitigation overrides[1] for the Blast Radius mitigation they introduced in the version before, it can be enabled from the cli per server
config user radius edit "radius" set server "xx.xx.xx.xx" set require-message-authenticator disable next end