This post details how I've been using OpenSSL to generate CSR's with Subject Alternative Name Extensions. thank's for the reply You are welcomed to send the CSR to your favorite CA. The alternative identity, if one exists, is specified in the subject alternative names extension for the X.509 certificate. It requires the name in a correctly maintained Subject Alternative Name (SAN) field. The subject alternative name extension allows identities to be bound to the subject of the certificate. X509v3 Subject Alternative Name: DNS:my-project.site and Signature Algorithm: sha256WithRSAEncryption. Author, teacher, and talk show host Robert McMillen shows you how to create a SAN certificate request in 2012 R2. Thanks. To make this work I need to use a certificate with SAN parameter. Amazing, I must have missed the memo on that. OID=1.3.6.1.5.5.7.3.1 ; Server Authentication Request SSL Certificate With a Subject Alternative Name (SAN) via enterprise CA with a GUI Leave a reply For those that want to quickly request a new SSL certificate via your Enterprise Certificate Authority, using a GUI instead of certutil commands, here is a tutorial on how to do so. If you forget it, your CSR won’t include (Subject) Alternative (domain) Names. Next verify the content of your Certificate Signing Request to make sure it contains Subject Alternative Name section under "Requested Extensions" # openssl req -noout -text -in ban21.csr | grep -A 1 "Subject Alternative Name" openssl subject alternative name You’ll then need to restart Certificate Services. to be protected by a single SSL Certificate, such as a Multi-Domain (SAN) or Extend Validation Multi-Domain Certificate.. Background. Amazing, I must have missed the memo on that. to be protected by a single SSL Certificate, such as a Multi-Domain (SAN) or Extend Validation Multi-Domain Certificate.. Background. [NewRequest] By using the SAN section, it is possible to add multiple alias names to a certificate. Thanks in advance. SAN can have multiple common names associated with the certificate. The command below export the private key to the file serverkey.pem: You will need to provide the keystore password (protected). [Extensions] Exportable = FALSE   ; TRUE = Private key is exportable Your solution would have also have worked great for me. Essentially, it’s a combination of a wildcard SSL certificate and a multi-domain SSL certificate. A SSL certificate with SAN values usually called the SAN certificate. ()certReq.Submit(CR_IN_ENCODEANY|CR_IN_FORMATANY,request,sAttributes,CAName ); And the submit is rigth, but when i get the certificate from CA, the subject alternative name not is in the certificate, and so i can't do the logon. Ensure that you hit Apply as soon as you are done with the tab. and followed the "To use the Certificate Enrollment wizard with a standalone CA" section. These values added to a SSL certificate via the subjectAltName field. My PowerShell script simplifies CSR file creation with alias name support. Add Subject Alternative Name to openssl-temp.cnf, under [v3_ca]: [ v3_ca ] subjectAltName = DNS:localhost Replace localhost by the domain for which you want to generate that certificate. When I request a WebServer certificate for the site system, in the subject name a use the Type:Full DN and Value:server.domain.com. 0. The specification allows to specify additional additional values for a SSL certificate. In Public Certificate Authorities, "Subject Alternate Names" can be used and this can also be done with self signed certificates. To create a Certificate Signing Request (CSR) and key file for a Subject Alternative Name (SAN) certificate with multiple subject alternate names, complete the following procedure: Create an OpenSSL configuration file (text file) on the local computer by editing the fields to the company requirements. For examples, see the sample .inf file. A (Subject Alternative Name) SAN certificate can be used on multiple domain names, for example, abc.com or xyz.com, where the domain names are completely different, but they can use the same certificate. It requires the name in a correctly maintained Subject Alternative Name (SAN) field. Does anyone know how to create a Certificate Request with the 'Subject Alternate Name'? I had to use the "Additional Attributes" field in the certificate request form. This is a standard certificate field. Next, we will generate CSR using private key above AND site-specific copy of OpenSSL config file. Apologies for the late update, the CA(not going to name) issued the cert without one of the SAN's that i needed which meant i had to revoke the original request and resubmit. The Email name is unavailable and cannot be added to the Subject or Subject Alternate name. How to create a certificate request with subject alternative names in IIS 7.0, http://technet.microsoft.com/en-us/library/ff625722(v=ws.10).aspx, Creating SAN certificates using a Server 2008 Certification Authority (CA), http://social.technet.microsoft.com/Forums/eu/winserversecurity/threads. You may have noticed that since Chrome 58, certificates that do not have Subject Alternative name extensions will show as invalid. Background. Verify Subject Alternative Name value in CSR. I have no problem creating a certificate without SAN's. KeySpec = 1          ; Key Exchange – Required for encryption If you forget it, your CSR won’t include (Subject) Alternative (domain) Names. A SAN certificate is a term often used to refer to a multi-domain SSL certificate. We will learn how to generate the Subject Alternate Name (or SAN) certificate in a simple way. How do you generate your request without the SAN, via certreq you need to create a .inf has configuration file for the request, [Version] What if she took that same request file, and re-submitted it? How to easily create a Self Signed Certificate with a SAN (Subjective Alternative Name) with PowerShellInstall the Module if its missing 1. To add more names I need to add a 'Subject Alternate Name' field with the extra names listed. Using a SAN certificate Is more secure than using a wildcard certificate which Includes all possible hostnames In the domain.. ProviderName = "Microsoft RSA SChannel Cryptographic Provider" This is a standard certificate field. I created a template where the Subject Name should be supplied in the request. The Email name is unavailable and cannot be added to the Subject or Subject Alternate name. A subject alternative name wildcard is also known as a SAN wildcard and a multi-domain wildcard. Click Create and submit a request to this CA. Generate the certificate. Steps to request SSL Certificate from Microsoft CA with Certreq. Generate the certificate. Click on Subject tab and add all the hostnames under “ Alternative Name “ Under Subject Name, enter the Common Name (CN), Organizational Unit (OU), Organization (O), State (S) and Country (C) values. I have no problem creating a certificate without SAN's. The specification allows to specify additional additional values for a SSL certificate. What are SAN (Subject Alternative name) Certificates. RequestType = PKCS10 ; or CMC. Cert is now in place and all SAN's catered for. Steps. If you need a new CSR similar to an existing certificate look at that certificate details and the Fields Subject and Subject Alternative Name Under the tab Extensions choose Client Authentication Server Authentication for Extended Key Usage (application policies). Prepare an INF file and save it as C:\temp\RequestConfig.inf; Subject – Replace it with CN=FQDN; Private Key is exportable; Certificate = WebServer; Include the additional SAN name under 2.5.29.17 = "{text}" ; SAN – Subject Alternative Name The Subject Alternative Name extension (also called Subject Alternate Name or SAN) was introduced to solve this limitation. Subject = "CN=www.acme.com,OU=WebServer,O=Acme inc,ST=QC,C=US,DC=acme,DC=com" You should now have a better knowledge of what is SAN certificate and how to create SAN CSR, How SameSite Cookies Are Making the World a Safer Place, Explaining how to create the SAN certificate using the Java keytool, Explaining how to export the certificate private and public keys using OpenSSL, Explaining how to create the Certificate Signing Request (CSR) for the SAN certificate using the Java keytool. The Subject Alternative Name extension was a part of the X509 certificate standard before 1999, … Same request file as above, but in addition to automatically populating the certificate’s subject alternative name from AD, let’s say we add our own, in the form a CSR request attribute. For example you can protect both www.mydomain.com and www.mydomain.org. Create a SAN Certificate. The Subject Alternative Name field lets you specify additional host names (sites, IP addresses, common names, etc.) After the release of Chrome v58 Common Name (CN) support is removed for SSL Certificates. X509v3 Subject Alternative Name: DNS:my-project.site and Signature Algorithm: sha256WithRSAEncryption. The ability to directly specify the content of a certificate SAN depends on the Certificate Authority and the specific product. Remember to add a valid Host + Domain Name for Common Name (CN), should look like www.yoursite.com or yoursite.com. When using the term ‘multi-domain certificates’, we’re generally referring to an SSL certificate that has the ability to cover multiple host names (domains). Hod Can this be done via Infoblox or do I need to use a 3rd party tool to hack the Certificate Request? Denied by Policy Module the request ID is {number} As I could see it was denied, I went and looked in failed requests, sure enough, here was where my auto enrollment had been failing. 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