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How to generate a self-signed SAN SSL/TLS certificate using openssl

Generating a self-signed certificate is a common taks and the command to generate one with openssl is well known and well documented. Generating a certificate that includes subjectAltName is not so straght forward however. The following example demonstrates how to generate a SAN certificate without making a permanent change to the openssl configuration.

Generate a list of all required DNS names, (Note: CN will be discarded).

$ export SAN="DNS:www.domain.localdomain,DNS:domain.localdomain"

zsiddiqi

Installing Windows Subsystem for Linux 2, Hyper, ZSH, Node.js and VSCode extensions

Requirements

• Windows 10 Build 18917+ (only as Windows Insider 09/2019)

Steps