This article series describes the different parts necessary to create an Always On VPN User tunnel based on Enterprise PKI certificates distributed through Intune with a SCEP Certificate Profile.

Prerequisites

This series covers

Distribute the User Authentication Certificate for Always On VPN with Intune SCEP Certificate Profile and NDES

Time needed: 10 minutes.

This steps are executed on Microsoft Endpoint Manager admin center (https://devicemanagement.microsoft.com/) in Devices, Configuration profiles.

  1. Create profile: Trusted certificate

    Upload your Root certificate to Intune (.cer File) and assign that to the users / devices where you want to enroll the VPN User Certificate.Intune Trusted Root Certificate

  2. Create profile: SCEP certificate

    AOVPN User Certificate Intune SCEP

  3. Basics: Choose a name for your SCEP certificate

    AOVPN User Certificate SCEP Profile

  4. Configuration settings: Configure the settings as follows

    Certificate type: User
    Subject name format: Custom
    Custom: CN={{OnPrem_Distinguished_Name}}
    Subject alternative name: User principal name (UPN)
    Certificate validity period: Years 1 (or according your needs)
    Key storage provider (KSP): Enroll to Trusted Platform Module (TPM) KSP, otherwise fail
    Key usage: It depends on which Registry Key value you have assigned the Certificate Template
    SignatureTemplate =Digital Signature, EncryptionTemplate = Key Encipherment, GeneralPurposeTemplate = Select both
    Key size (bits): 2048
    Hash algorithm: SHA-1
    Root Certificate: Select the certificate you have previously uploaded.
    Extended key usage: Select Client Authentication from Predefined values
    Renewal threshold (%): You can leave that with 20
    SCEP Server URLs: Here you can add your NDES URL(s)

    Intune SCEP Certificate Settings Always On VPN

  5. Assign the SCEP profile to the desired users group

  6. Wait until the Intune policy applied on your device and check if the certificate appears in the Users Certificate Personal Store.