Hello there:
--> Below are the best providers to consider when buying a SSL certificate:
1. Verisign
2. Commodo
3. Geotrust
4. Thwate
5. DigiCert
Choosing the best and most reliable SSL certificates available might be a matter of trust. You may be getting a provider that gives out inexpensive certificates but are not known. At the same time, some of the more inexpensive certificates are just as reliable as the expensive ones. Beyond that, you should take a look at the level of service that your provider is giving you.
--> There are three common types of certificates. Choosing the right one will be based on the level of security your website needs.
1. A "domain-validated SSL certificate", otherwise known as a low assurance certificate, is the standard type of certificate issued. Automated validation ensures that the domain name is registered and that an administrator approves the request. In order for the validation to be completed, the webmaster must either confirm via email or configure a DNS record for the site.
2. An "organization-validated certificate", or high assurance certificate, requires real agents to validate the domain ownership, plus organization information such as name, city, state and country. Similar to a low assurance certificate, it requires additional documentation to verify the company identity.
3. An "Extended validation certificate", is a new type of certificate that requires the most rigorous validation process. This type of certificate checks to ensure that the business is a legal entity and requires business information be provided as proof of domain ownership. Standard SSL certificates do not represent that your website is being operated by a legitimate, verified business. One exclusive feature of purchasing an EV certificate is that your website browser bar will display a green padlock. This can help to bolster consumer confidence and provide reassurance that the transaction is secure.
Further, you can buy SSL on your need if you wish to secure single, multiple, or subdomains including your main domain:
1. Single-name SSL certificates protect a single domain. For example, if you were to purchase a certificate for
www.xyz.com, it would not secure abc.xyz.com.
2. Wildcard certificates allow you to secure an unlimited number of subdomains that live off a singular root domain. For example, say you want to secure the domain
www.xyz.com and its subdomains. You would need to request a wildcard certificate with *.xyz.com as the common name. This certificate would secure
www.xyz.com, abc.xyz.com, def.xyz.com, etc.
Wildcard certificates can easily pay for themselves over time, especially if you need to secure four-plus subdomains. As an added benefit, it’s much easier to manage one wildcard certificate than 12 single certificates.
3. Multi-domain certificates can protect upwards of 210 different domains with a single certificate (depending on the provider you choose).
Hope this helps you.