If your file doesn't look similar to the example, typically that means you didn't export it using the Base-64 encoded X.509(.CER) format. The section highlighted in blue contains the information that you copy and upload to Azure. You'll see text similar to the following example. Export the certificate in the required Base-64 encoded X.509 (.CER) format and open it using a text editor, such as Notepad.

Depending on the configuration, you might be requested to upload the Radius root certificate to the portal. Select the client and fill out any information that is requested. You can generate the VPN client configuration files by using the Azure portal, or by using Azure PowerShell. If the device that you want to connect from has only one client certificate, you don't have to specify this parameter. cer file that contains the root certificate. The correct certificate can be filtered out by specifying the root certificate that the client certificate should chain to. The user must then choose the certificate to use. During authentication, this can result in a pop-up dialog box that lists all the certificates. Sometimes a Windows device has multiple client certificates. cer file that contains the root certificate that's used to validate the RADIUS server.Įach VPN client device requires an installed client certificate.

During certificate authentication, the client validates the RADIUS server by validating its certificate. In the commands, -AuthenticationMethod is EapTls. Make sure that all connecting users have a certificate installed on their devices, and that your RADIUS server can validate the certificate. Typically, an enterprise-issued certificate is used to authenticate a user for VPN. You can create VPN client configuration files for RADIUS certificate authentication that uses the EAP-TLS protocol. If there are any changes to the point-to-site VPN configuration after you generate the VPN client configuration profile, such as the VPN protocol type or authentication type, you must generate and install a new VPN client configuration on your users' devices.

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