ELI5: domain certificates
// explanation
What is a domain certificate?
A domain certificate is like a special ID badge for a website that proves it's the real deal and not a fake [1]. It uses secret codes to scramble information so that when you visit a website, nobody can secretly peek at what you're typing [5].
Why do websites need certificates?
Websites need certificates so your computer can trust they're real before you send them passwords or credit card information [1][5]. It's like a bouncer checking ID at a club—it makes sure the website is who it says it is [7].
What does a certificate do?
A certificate encrypts (scrambles) your data so that hackers can't read your messages even if they intercept them [5]. It also shows a little lock icon in your browser that tells you it's safe to share private information [1].
How do you get a certificate?
You can get free certificates from Let's Encrypt if your website is on the internet [2], or you can buy one from companies like Sectigo that issue them in 1-3 days [5]. You use a tool called certbot or similar software to install it on your website [3].
// sources
Jan 20, 2024 ... All names in the certificate (both Subject and SAN, both FQDN and wildcard) need to be publicly accessible and able to be validated by Let's ...
Apr 18, 2022 ... Your best choice as long as your lab has internet access is too use "Let's Encrypt". The service is free and there are clients and instructions for just about ...
Mar 28, 2018 ... To get a certificate, you'll run certbot or some other client—there are lots of client options, some of which don't even require you to install ...
Jul 18, 2022 ... The clients will never know you have bought multiple certs. They only know what the server presents to them and verifies that. 100% no issues.
Secure up to 250 domains with Sectigo's Multi-Domain OV SSL Certificate. Get 256-bit encryption, authentication, and trusted protection. Issued in 1-3 days.
Video by Create a Pro Website
Video by Dave Crabbe
Video by Hostinger Academy
