Hello @user_3534491
If the user want to ban the warning page, please try follow the steps below:
1: buy radius servercertificate from authority(only .pfx format is supported);
2: replace thedefault radius server certificate on agile controller page
a) Enter System > External Authentication > CertificateAuthentication Management, upload the CA certificate on CA Certificate Uploading tab page;
b) Enter System > Terminal Configuration > Global Parameters > Access Management and find Upload RADIUS Server Certificate, choose new radius server certificate,enter the certificate key, and choose the correct CA certificate which uploadon a) step;
c) Restartradius server to make the new certificate take effect