To protect a public-facing website with HTTPS, it is necessary to install an SSL/TLS certificate signed by a publicly trusted certificate authority (CA) on your web server. SSL.com's knowledgebase includes many helpful guides and how-tos for configuring a wide variety of web server platforms to support HTTPS. For more general guides to HTTP server configuration and troubleshooting, please read SSL/TLS Best Practices for 2020 and Troubleshooting SSL/TLS Browser Errors and Warnings.