But, of course, we have to sign it. Open Internet Information Services (IIS) Manager. When end user RDP connecting to PSM, following certificate warning will pop up. 4.) So now we've got a shiny new CSR. The goal of this exercise is to generate a certificate that will contain multiple Subject Alternative Names (SAN) in addition to the subject name (common name) of the certificate. For example, PowerShell or certreq.exe tool (both are included in the box). All I need is to add SAN (Subjet Alternate Name) into the CSR while generating it. Select the server where you want to generate the certificate. The creation of CSR for SAN is slightly different than traditional OpenSSL command and will explain in a while how to generate CSR for Subject Alternative Names SSL certificate. openssl x509 -req -sha256 \-days 365 \-in san.csr \-signkey san.key \-out san.crt >/dev/null 2>&1. The following solution details steps to create a CSR with the SAN extension using a Microsoft web server and on UNIX or Linux systems. Although this question was more specifically about IP addresses in Subject Alt. Submit the CSR to the CA, now with malicious intent. Enter Distinguished Name Properties. 2. Select the “DNS” field type and add the domain names one by one: The result should look similar to this: The last tab in this window we should open and review is the “Private key”. – Create an OpenSSL configuration file (e.g. If you want to secure multiple domains with one TLS/SSL certificate you will need to use multi-domain certificate with more than one Subject Alternative Name (SAN) specified in it. For instructions on how to create a CSR, see Create a CSR (Certificate Signing Request). In the Windows start menu, type Internet Information Services (IIS) Manager and open it.. Each server software has a slightly different way for you to generate your certificate signing request (CSR). If you are just making a self-signed certificate, you may need to break out OpenSSL. I know that I can use DigiCert Certificate Utility for this but it is not an option to install. As you can see, this CSR has a subject, and a subject alternative name. Here’s how. Following is the procedure to create CSR for multiSAN certificate with openSSL. Let’s take a look at a real-time example of skype.com, which has many SAN in a single certificate. For demonstration purposes, we will be changing the SAN information. PowerShell Minimum required parameters New-SelfsignedCertificate ` -DnsName "mysite.com","www.mysite.com" ` -CertStoreLocation cert:\localmachine\my so generate CSR as per normal. Using native PowerShell features this turned out to be a lot harder than expected. X509v3 Subject Alternative Name: DNS:kb.example.com, DNS:helpdesk.example.com, DNS:systems.example.com Signature Algorithm: sha1WithRSAEncryption blahblahblah. However, I couldn't find this option in IIS 6.0. Normally I use the built in feature from IIS but it does not give the alternative to use Subject Alternative Name (SAN). So when needed, you can add SANS to your certificate. Reissue your multi-domain SSL/TLS certificate to add subject alternative names (SANs) DigiCert multi-domain certificates come with unlimited reissues. Leave a Reply Cancel reply. From IIS -> Server Certificates -> Create Certificate Request. 5.Submit your CSR to a Certificate Authority to obtain an SSL certificate. 2 thoughts on “ Create a Subject Alternative Name (SAN) CSR with OpenSSL ” Amin Gholami says: 24/04/2019 at 4:48 pm #Generate the cert 1 year. Generate CSR with SAN from Windows Server and Submit to MS CA to Sign for IIS and RDP Services Monday, ... PVWA IIS Server Those steps are more Windows System Administrator tasks, not specifically for CyberArk. 1 Can someone help me out :) I am looking for some help in creating a certificate request on windows server 2008 and IIS 7. ";-----" ;----->> >> ..csr After your UCC certificate is issued, you can add or remove Subject Alternative SANs at any time.. On this page we'll explain how to generate a CSR (Certificate Signing Request) using certreq. How to Duplicate a Certificate with Subject Alternative Names (SANs) On the server for which you want the duplicate Wildcard Certificate with SANs, create a new CSR/keypair. I don't know of any way to add Subject Alternative Names on Windows. This extensions file includes the Alternate Names. I am trying to generate a CSR from IIS 6.0 to obtain a SSL certificate with more than one DNS info in it. Click Start, Control Panel, System and Security, Administrative Tools, and then select Internet Information Services (IIS) Manager. If you are submitting the CSR to a certificate authority, they normally allow you to add the SANs on their site so they don't need to be in the CSR. How to generate a certificate signing request (CSR) in IIS 10. Make sure you use the template name. This is usually a fully-qualified domain name, like www.mydomain.com, or store.mydomain.com. Using a simple certreq.exe command, you can use the EA certificate to re-sign the above request using the following command line: Create a SAN Certificate. By default, the command creates X509 v1 certificate. >> >> >> ::. Using a SAN certificate Is more secure than using a wildcard certificate which Includes all possible hostnames In the domain. How to create a SAN certificate signing request for IIS web server? I had a requirement to script the request, issuing and importing of a certificate request including multiple domain SAN (Subject Alternate Name) entries. I was just wondering if someone could please send me instructions on … How to generate a CSR code on a Windows-based server without IIS Manager. 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. I need to create a CSR on Windows with Subject Alternative Names. Once your CSR is created and saved, open a command prompt. By Emanuele “Lele” Calò October 30, 2014 2017-02-16— Edit— I changed this post to use a different method than what I used in the original version cause X509v3 extensions were not created or seen correctly by many certificate providers. SubjectNameFlags allows the INF file to specify which Subject and SubjectAltName extension fields should be auto-populated by certreq based on the current user or current machine properties: DNS name, UPN, and so on. Generate a Wildcard SSL CSR on your Server. 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