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How do you give a subject alternative name on a certificate?

Create a Certificate Signing Request (CSR)

  1. Choose Proceed without enrollment policy and Click Next.
  2. Give a friendly name for the certificate and a description.
  3. Click on Subject tab and add all the hostnames under “Alternative Name“

What is AD CS used for?

According to Microsoft, AD CS is the “Server Role that allows you to build a public key infrastructure (PKI) and provide public key cryptography, digital certificates, and digital signature capabilities for your organization.”

What is a San value?

Subject Alternative Name (SAN) is an extension to X. 509 that allows various values to be associated with a security certificate using a subjectAltName field. These values are called Subject Alternative Names (SANs).

What is Certsrv?

The certsrv.exe is a Microsoft® Certificate Service. This file is part of Microsoft® Windows® Operating System. Certsrv.exe is developed by Microsoft Corporation. It’s a system and hidden file. Certsrv.exe is usually located in the %SYSTEM% sub-folder and its usual size is 294,400 bytes.

What is Cn and san?

SAN is an extension to the X. 509 specification that allows users to specify additional host names for a single SSL certificate. It is still a practice to define both CN and SAN when requesting a certificate. An important point is that CN and SAN are not complimentary and any CN defined should be a subset of SAN list.

What is a San DigiCert?

DigiCert Subject Alternative Name (SAN) Certificates can secure multiple fully qualified domain names with a single certificate. SAN Certificates allow you to secure a primary domain and then add additional domains to the Subject Alternative Name field of the certificate.

How can I generate a self signed certificate with subjectAltName using openssl?

How to create a self-signed SSL Certificate with SubjectAltName(SAN)

  1. Step 1: Generate a Private Key. openssl genrsa -des3 -out 2048.
  2. Step 2: Generate a CSR (Certificate Signing Request)
  3. Step 3: Remove Passphrase from Key.
  4. Step 4: Create config file for SAN.
  5. Step 5: Generating a Self-Signed Certificate.

How are subject alternative names used in SSL certificates?

These certificates will be automatically trusted by all its domain joined systems. For systems outside the domain, a manual procedure is required to trust these certificates. What are SAN Certificates? Subject Alternative Names (SAN) allow you to specify a list of host names to be protected by a single SSL certificate.

Why do you need a subject alternative name?

Subject Alternative Names (SAN) allow you to specify a list of host names to be protected by a single SSL certificate. A SAN Certificate is typically useful in scenarios where you need to host multiple SSL-enabled sites on a single server using a single IP address.

Can a Windows based certifcate authority issue SAN certificates?

This is because Windows based Certifcate Authority does not allow the issuance of the SAN Certificates, by default. To allow the internal CA to issue SAN Certificates, you have to modify the default Issuance policy of Certificate Authority to accept the Subject Alternative Name (s) attribute in the CSR.

Why does Microsoft CA not accept subject alternative name?

One of the reasons why performing the above would not generate a certificate that includes a SAN entry is if the issuance policy of the Microsoft CA is not configured to accept the Subject Alternative Name (s) attribute via the CA Web enrollment page. To correct this, execute the following command: