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SCEP configuration (iOS device policy)

With the SCEP configuration you enable devices to request certificates from a Certificate Authority using the Simple Certificate Enrollment Protocol (SCEP).

Setting Description
URL

The web address of the Certificate Authority server.

Use the variable %_SCEPPROXYURL_% to refer to the server URL that is configured on the SCEP tab of the Sophos setup page.
CA name A name that is understood by the Certificate Authority. The name can, for example, be used to distinguish between instances.
Subject

The name of the entity (for example person or device) that will receive the certificate.

You can use placeholders for user data or device properties.

The value that you enter (with placeholders replaced by the actual data) must be a valid X.500 name.

For example:

  • Enter CN=%_USERNAME_% to specify a user.
  • Enter CN=%_DEVPROP(SerialNumber)_% to specify an iPhone or iPad.
Type of Subject Alternative Name

To add a Subject Alternative Name (SAN) to the SCEP configuration, select the SAN type and then enter the SAN value. SAN types are:

  • RFC 822 name: A valid email address.
  • DNS name: The DNS name of the CA server.
  • Uniform resource identifier: The fully qualified URL of the CA server.
Value of Subject Alternative Name
AD user logon name The User logon name value set in Active Directory, i.e. the user’s User Principal Name (UPN).
Challenge

The web address to obtain a challenge password from the SCEP server.

Use the variable %_CACHALLENGE_% to refer to the challenge URL that is configured on the SCEP tab of the Sophos setup page.
Retries The number of retries if the server sends a response of type pending.
Retry delay The number of seconds between retries.
Key size

The size of the public key in the issued certificate.

Make sure that the value matches the size configured on the SCEP server.
Certificate usage

Select what the certificate can be used for.

  • Use as digital signature: The certificate can be used as a digital signature.
  • Use for encryption: The certificate can be used for data encryption.