3.Generate a private key and Certificate Signing Request by using the sancert.cnf configuration file. OpenSSL will interactively prompt for a password. The example below generates a certificate with two SubAltNames: mydomain.com and www.mydomain.com Answer however you like, but for 'Common name' enter the name of your project, e.g. This post explains how to generate self signed certificates with SAN – Subject Alternative Names using openssl.It is a common but not very funny task, only a minute is needed when using this method. 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. Self-signed cert with Subject Alternative Names. openssl req -out sslcert.csr -newkey rsa:2048 -nodes -keyout private.key -config san.cnf This will create sslcert.csr and private.key in the present working directory. 2. You have to send sslcert.csr to certificate signer authority so they can provide you a certificate with SAN. Unable to generate certificate with Subject Alternate Name using Java 1.7 keytool utility. my_project) Now check the CSR: openssl req -text -noout … Certificate: Subject Alternative Name missing Certificate: missing The certificate provided by the box it's Common Name is not matching with my custom domain joomlatools.test , it's referring to localhost and the the Subject Alternative Name extension is also missing in the certificate. 2.Save the sancert.cnf file. Easiest way to generate PFX certificate (Windows) 3. Search for jobs related to Openssl self signed certificate subject alternative name or hire on the world's largest freelancing marketplace with 18m+ jobs. Since version 58, Chrome requires SSL certificates to use SAN (Subject Alternative Name) instead of the popular Common Name (CN), thus CN support has been removed. Certificate error I re-trusted this certificate by following the previous steps, it did not help. 14. Customer Service Subject Alternative Name missing The certificate for this site does not contain a Subject Alternative Name extension containing a domain name or IP address. I am currently facing an issue when adding a distinguished name in the subject alternative name extension. openssl pkcs12 -export -out myserver.pfx -inkey myserver.key -in myserver.crt (You do not need to change the commonName_default field, as you will be prompted to enter your common name in one of the following steps.) Subject Alternative Name Missing The certificate for this site does not contain a Subject Alternative Name extension containing a domain name or IP address. openssl req -new -sha256 \ -out private.csr \ -key private.key \ -config ssl.conf (You will be asked a series of questions about your certificate. Then, I saw this answer, I need to remake ssl keys. 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