What is SSL (Secure Sockets Layer) Certificate and Security: Everything you need to know [Detailed in full Guide]


SSL (Secure Sockets Layer) certificate is a standard security technology that creates an encrypted link between the web server and the browser. This link makes it impossible to read all the data transmitted between your web server and Browser. The website that uses SSL makes a secure connection with your browser and Websites that use SSL make a secure connection with your browser and prevent hackers and Middleman from receiving your information.

This information can be anything like credit card number and other financial information, names, addresses, login details etc. 

What is SSL Certificate ?

An SSL certificate encrypts the data that goes from a user's computer to the target website and back. Every time a user enters information into your site, SSL makes sure it can securely travel from their browser to your web server.

SSL Evolution (History)

SSL version 1.0 was introduced by Netscape in the 1990s. But it was never released due to some security flaws. In February 1995, SSL's first public release was SSL 2.0. While SSL 2.0 also had its own security flaws. Due to which it was redesign again and released a year later as SSL 3.0.

SSL 3.0 was used a lot, but SSL 3.0 is also not considered secure after a POODLE attack.

TLS (Transport Layer Security) is currently an updated and more secure version of SSL. The final version of TLS is TLS 1.3, which was launched in August 2018.

What are the types of SSL Certificates Security?

There are several types of SSL Certificate:

Domain Validation
Organization Validation
Extended validation
SAN / Multi-domain SSL
Wildcard SSL
Multi Domain Wildcard SSL Certificate
Unified Communications Certificate (UCC)

1. Domain Validation (DV)

It is the cheapest SSL certificate and perfect for a blog. You can achieve this in a few minutes or hours. It is best for those who do not need extra security.

  • it's cheap.
  • Can be obtained in a few minutes or hours.
  • Best for blogs and small websites.

2. Organization Validation (OV)

It provides better security than Domain Validation certificate. Such a certificate takes 2-3 days to activate.

3. Extended Validation (EV) 

Extended Validation Certificate is very important for websites on which the transaction takes place. It displays a padlock with the business name in the URL.

                                Extended Validation (EV) SSL Certificate

Domain Validation and Organization Validation certificates are easy to obtain, while Extended Validation requires a strict authentication process. It takes about 7-10 days to activate.

Most banking, finance, and e-commerce websites use EV certificates.

4. SAN / Multi-domain SSL

Multi-domain SSL certificates are also called SAN certificates. This type of certificate helps in securing many domain names. 100 domains can be secured by a single Multi-domain SSL certificate.

You can achieve this with Domain Validation, Organization Validation and Extended Validation. 

5. Wildcard SSL

The Wildcard SSL certificate secures your domain and unlimited sub-domains with a single certificate. It is available with Domain Validation (DV) and Organization Validation (OV).

6. Multi-domain SSL Certificate 

This type of certificate secures unlimited sub-domains with multiple domain names. You can achieve this with Domain Validation (DV) and Organization Validation (OV).

7. Unified Communications Certificate (UCC)

Unified Communications Certificate (UCC) is specifically designed to secure Microsoft Exchange and Microsoft Office Communications server.

It works like a Multi Domain SSL certificate and 100 domains can be secured by a single certificate. 

How to check if the website is using SSL / HTTPS 

It is very easy to check whether the website is using SSL / HTTPS.

If a website uses SSL / TLS, most browsers show a Secure connection with a padlock in the address bar. Here is a screenshot of the Chrome browser. 


Top SSL Providers to Enable HTTPS

There are many SSL Provider available in the market which offers SSL certificate:

1. improving Encrypt

Managing Encrypt is a free and reliable SSL certificate provider. This allows HTTPS to be installed on your blog for a lifetime at zero cost. Improving Encrypt lasts Valid for 3 months and after that, you have to renew it and good thing there is no charge for it. You can enable Automatic renew setting.

2. Cloudflare Free SSL / TLS

Cloudflare is a CDN service that offers HTTPS certificate for lifetime for free. Here's a guide - How to setup CloudFlare Flexible SSL in WordPress site

3. Comodo 

Comodo is one of the top class HTTPS providers. It also offers free SSL certificate along with paid SSL certificate. You can use it for 90 days at zero cost, after that you will have to renew it.

4. SSL For Free

SSL For Free is also a good website to get HTTPS for free. It offers HTTPS for lifetime for free and you never have to pay for it.

Apart from this you can buy SSL certificate for your site from The SSL Store, GeoTrust, RapidSSLonline, SSL.com, GoDaddy, Network Solutions or talk to it by contacting your domain registrar.

Things to know before buying SSL Certificate

Read more :Website Blog Ko Google me Rank Kaise Kare SEO Improve Top Solution 2020

When purchasing SSL Certificate, keep some important things in mind.

1. Brand name

There are many companies in the market that sell SSL certificates. But it is better to buy SSL Certificate from a big and reliable brand.

2. Encryption Level

There are many levels of encryption. If you accept credit / debit cards on your website, you must have at least 128-bit SSL certificates.

3. Dedicated SSL & Shared SSL certificate

Dedicated SSL certificate - you have to buy it and most brands offer Dedicated SSL.
Shared SSL certificates - found for free, perfect for blogs and non-sensitive websites. But it is not recommended for e-commerce sites.
Dedicated SSL certificates provide very good support while Shared SSL certificates do not provide any type of support.

Benefits of using SSL

1. SSL protects data 

Creates a secure connection between the SSL user and the web server. And prevents user's sensitive data from being hacked.

When you enter your data on a Non-HTTPS (website with no SSL), that data is sent as plain text to the server which can be easily read and hacked.

Whereas SSL / TLS creates an encrypted connection between the user and the web server and sends the data as a code to the server. Which is very difficult to decrypt (read).

2. Improves Visitors' Trust

If you use SSL on your site, then visitors will trust your site. Your website will appear in the address bar of the browser with a security padlock. This shows that your site is secure and takes the visitor's privacy seriously.

3.Website SEO Boost

If you use SSL / HTTPS on your site, then your website ranks better in Google search. Because SSL / HTTPS is a Google ranking factors.

4. Chrome Warnings

As of July 24th, 2018, Chrome 68 and higher versions are showing "Not Secure" to all non-HTTPS sites. That's why HTTPS is so much more important!

5. Improves Your Site Performance 

TLS 1.3 is an upgrade version of SSL and provides better performance and security to your site.

Cons using SSL
Advantages of SSL also have some disadvantages:

1. Money Cost 

You have to spend money to buy SSL. However, if you have a blog, you can get SSL for free by improving Encrypt and Cloudflare. But for an eCommerce site you have to buy SSL.

2. Traffic and Search Ranking may fall

 If you make the slightest mistake in installing SSL on your site, your search ranking and traffic may be Zero. Here is a guide - WordPress Site How to move from HTTP to HTTP

3. Mixed Content Error 

When you install SSL certificate on your site, your web page may show insecure after opening in the browser.

Due to which many visitors may get scared and will click on the back button and exit from your site. Site traffic will gradually decrease as a result.

final thoughts
SSL (Secure Sockets Layer) creates a secure connection between the web server and the browser. And keeps the transmitted data encrypted and secure.

It is also a Ranking signal. So purchasing SSL for the site becomes very important. 


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