How to Generate WildCard Certificate from Root Certificate Authority Server
Learn how to generate a Wildcard SSL Certificate from a Root Certificate Authority (CA) Server in this step-by-step tutorial.
A Wildcard SSL Certificate allows you to secure unlimited subdomains under a single certificate (e.g., mail.example.com, vpn.example.com, www.example.com). In this video, I’ll guide you through:
What a Wildcard SSL Certificate is
How to create a Certificate Signing Request (CSR) for *.yourdomain.com
How to sign the CSR with your Root CA server
How to install and verify the wildcard certificate
This method is perfect for internal labs, enterprise environments, and testing. For production use, always obtain certificates from a trusted public CA such as DigiCert, GlobalSign, or Let’s Encrypt.
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