Ssl and certificates explained for beginners
When people are looking to purchase or renew an SSL Certificate, I often see them confused about the differences between Shared SSL and Private SSL. Both provide SSL protection, but in different ways and with different limitations.
Shared SSL just encrypts the domain, not authenticates it. When you visit a website like this, you will receive a security alert. This is because the SSL certificate for this domain was not released, but it was issued for the server you are using. If you want to display the certificate, you can see the CN(Common Name) set under the “Issued To:” portion.
Because of the security error shown, most people avoid websites with Shared SSL when submitting their private or credit card details. E-commerce websites do not use Shared SSL for the same purpose.
Customers trust private SSLs because they are unique to the customer’s name, address, and company details and provide a higher degree of protection. As a result, most online businesses tend to use Private SSL, which allows them to explicitly collect credit card details. Also, because of Private SSL, no security alert notices would appear when people visit your website safely.
I have a free Cloudflare account where I manage my domain (for example, mydomain.com), and I use the free SSL certificate (mode Full SSL) to get SSL on a subdomain (blog.mydomain.com hosted with Github Pages).
As you probably know, the Cloudflare SSL certificate is a wildcard form that is shared among many domains (often adult sites). (As a result, it includes *.mydomain.com, *.malicious.com, mydomain.com, and malicious.com)
Mydomain.com runs the web application, and app.mydomain.com is protected with its own SSL certificate. Are these domains at risk because they share a certificate with malicious.com, and malicious.com most likely has access to the same SSL certificate as mydomain.com?
Since the owner of malicious.com has access to the same SSL certificate shared by mydomain.com, the web application hosted on mydomain.com or app.mydomain.com (which is also protected with its own SSL certificate) may be in any way harmful to the owner of malicious.com?
The malicious domain’s owner does not have access to Cloudflare’s private key certificate, and neither do you. Cloudflare holds the certificates for the free accounts, and only Cloudflare has access to the (shared) certificate’s private key.
When it comes to encryption, there is no difference between a shared SSL certificate and a private SSL certificate. After all, having a mutual certificate is superior to not having any at all.
Since you’re using the shared SSL on your web server, the SSL is connected to the shared server’s domain name rather than yours. When your visitors try to access your website, the web browser may issue an alert or certificate warning because the domain name they are visiting does not match the domain name specified on the SSL certificate.
Shared SSL is built for circumstances where you need a secure connection to the server that isn’t open to the general public. When logging into webmail or your website’s admin area, for example.
Having this information available to your guests will assist them in determining with whom they are doing business and will assure them that your website is secure and not a phishing site. Your company name would not appear on the shared SSL because it is issued to the shared web server. Although the SSL certificate protects your website, it does not include the additional benefits of confidence that a private SSL certificate does.
SSL (Secure Sockets Layer) has become a critical component in the design of modern web applications and websites. Data is transmitted over a network of servers when a user enters details on your website/web app. An SSL certificate guarantees that all information sent to your website or mobile app over the internet and through computer networks is secure and encrypted, and that only the intended recipient has access to it. All of the servers in between will read the information if your web app/website is not encrypted with SSL.
As a result, webmasters must now install SSL certificates on their websites and web applications. It’s particularly relevant if your website collects sensitive data including credit cards, personal details, addresses, passwords, social security numbers, and so on.
An SSL certificate offers authentication in addition to encryption. It assists the user in ensuring that the information is submitted to the correct server and not to a phishing impostor who might attempt to steal the information.