A Multi-Domain Wildcard SSL certificate can secure multiple domains and all of their associated subdomains. Basically, this certificate combines multiple wildcard domains into one certificate.
UC stands for Unified Communications and is a newer type of SSL certificate that is designed and primarily used for securing Microsoft Exchange 2007 and Microsoft Office Communications Server 2007 products. The main difference between a UCC SSL and a standard Multi-Domain certificate is that a UCC can secure both internal network names and external domain names as well.
This largely depends on the type of Multi-Domain SSL certificate that you purchase. Comodo Multi-Domain certificates can cover up to 100 additional domains. Symantec and Thawte certificates can cover up to 25 additional domains. GeoTrust Multi-Domain certificates can cover anywhere between 25-100 additional domains, depending on the certificate.
That is the difference between the key lengths used once an SSL connection has been established in the browser. 256-bit security is indeed a bigger key however that does not necessarily mean it is more secure. Experts and research agrees that 128-bit is equally secure for the foreseeable future. The only reason 256-bit security is needed is if it’s specifically required by your industry or company policy. All our certificates have the ability to use either bit-length, which one you use is a matter of server configuration, NOT certificate support.
If your hosting platform or company tells you that you can only use one certificate file, then you can combine your server certificate with the intermediate file.
You can use SSL to cover an internal domain if it is an officially registered domain (a publically available FQDN). If the internal domain is not a delegated and registered domain, the certificate will not be issued.
An intermediate certificate will be emailed to you along with your SSL certificate. You can also download the intermediate certificate from the vendor’s website, which is something that can be done if you didn’t receive the intermediate via email. This is also sometimes referred to as the “CA Bundle.” It is also important to note that some certificates have multiple intermediate certificates. Below are the links that you can use to download your intermediate certificate from the vendor website: https://knowledge.digicert.com/generalinformation/INFO4331.html https://knowledge.geotrust.com/support/knowledge-base/index?page=content&id=AR1421 https://search.thawte.com/support/ssl-digital-certificates/index?page=content&id=AR1384 https://knowledge.rapidssl.com/support/ssl-certificate-support/index?page=content&id=AR1548 https://support.comodo.com/index.php?/Default/Knowledgebase/List/Index/108/sha-2
An intermediate certificate is a file that helps the web browser identify who issued your SSL certificate. It is not required, but it is HIGHLY recommended that you install it along with your server SSL certificate in order to have full compatibility with all browsers and mobile devices.
Our SSL certificates can be valid from anywhere to 1-2 years, depending on the certificate you choose to purchase. Per the Certificate Authority/Browser (CA/B) Forum, the governing body of the SSL industry, EV certificates can only be issued for a maximum of 2 years. DV and OV certificates from Symantec, GeoTrust, Thawte, Comodo and RapidSSL can be issued for a maximum of 2 years.
Browser ubiquity or browser recognition basically means how many browsers recognize an SSL certificate and properly display the trust indicators. So, the higher the browser ubiquity of an SSL certificate, the more browsers that recognize and accept it.