How to create a self-signed certificate OR generate a CSR with "Subject Alternative Names" (SAN) by using OpenSSL
![Fixing Chrome 58+ [missing_subjectAltName] with openssl when using self signed certificates | Alexander Zeitler Fixing Chrome 58+ [missing_subjectAltName] with openssl when using self signed certificates | Alexander Zeitler](https://alexanderzeitler.com/articles/Fixing-Chrome-missing_subjectAltName-selfsigned-cert-openssl/missing_subjectAltName.png)
Fixing Chrome 58+ [missing_subjectAltName] with openssl when using self signed certificates | Alexander Zeitler
![google chrome - Subject Alternative Name Missing & ERR_SSL_VERSION_OR_CIPHER_MISMATCH - Stack Overflow google chrome - Subject Alternative Name Missing & ERR_SSL_VERSION_OR_CIPHER_MISMATCH - Stack Overflow](https://i.stack.imgur.com/XmgsOm.png)
google chrome - Subject Alternative Name Missing & ERR_SSL_VERSION_OR_CIPHER_MISMATCH - Stack Overflow
![Exfiltration series: Certexfil. “Data exfiltration occurs when malware… | by Jean-Michel Amblat | Medium Exfiltration series: Certexfil. “Data exfiltration occurs when malware… | by Jean-Michel Amblat | Medium](https://miro.medium.com/v2/resize:fit:450/1*2POeswlYE7P2TjpyoUs7BA.jpeg)
Exfiltration series: Certexfil. “Data exfiltration occurs when malware… | by Jean-Michel Amblat | Medium
![x509certificate - add or create 'Subject Alternative Name' field to self-signed certificate using makecert - Stack Overflow x509certificate - add or create 'Subject Alternative Name' field to self-signed certificate using makecert - Stack Overflow](https://i.stack.imgur.com/91nKz.jpg)
x509certificate - add or create 'Subject Alternative Name' field to self-signed certificate using makecert - Stack Overflow
![Fixing Chrome 58+ [missing_subjectAltName] with openssl when using self signed certificates | Alexander Zeitler Fixing Chrome 58+ [missing_subjectAltName] with openssl when using self signed certificates | Alexander Zeitler](https://alexanderzeitler.com/articles/Fixing-Chrome-missing_subjectAltName-selfsigned-cert-openssl/validsan.jpg)