An Introduction To The UC Certificate

One of the hallmarks of a top Certificate Authority is their ability to create options that are designed to work for their clients. For example, Comodo has always been a groundbreaking CA (Certificate Authority). Our founder Mehil Abdulhyoglu, spearheaded the development of CA/Browser Forum.

This group then went on the develop the EV SSL certificate, which is still the highest level of trust and assurance an online company can offer its clients. In addition, Comodo is now one of only three officially recognized vendors of the Microsoft UC certificate, often simply known as the UCC. It may also be called a UC/SANS, and we will get into the reasons behind that in just a minute.

The Basics

The UC certificate offers the same high standards of encryption of all of our SSL certificate products. This includes 128/256 bit encryption and full organization validation. This provides the highest level of trust and assurance next to the EV SSL. The UCC, like the Wildcard SSL certificate, is not available at the EV level by any CA.

This is because of the nature of the UCC as well as the Wildcard SSL certificate. Both are able to secure multiple different websites, although the types are different. The EV SSL has to provide enhanced validation for the specific site listed on the certificate, which makes it impossible for these multiple options.

While the Wildcard SSL certificate, which is familiar to most, will secure a main domain and as many subdomains as you like under the given main domain, the UC certificate can actually provide security for up to 100 named domains.

This will include 3 Fully Qualified Domain Name with the base price, with additional domains added to the certificate using the Subject Alternative Names or SAN feature on the certificate.

The UC certificate is designed specifically for use with the Microsoft Exchange and the Office Communications server environments. This also creates a difference between the two products, which may be easily confused by someone new to IT or new to working with SSL/TLS products.

As with all of the SSL products, this uses Secure Sockets Layer technology, which is now more commonly referred to as TLS or Transport Layer Security. TLS was developed from SSL and offers a few enhancements over the original protocols to add to the security provided.

Saving Time and Money

By choosing the UC certificate, it is possible for an IT administrator to consolidate all certificates on internal and external networks and have them covered by one product.

This not only saves money on renewals but it also offers some other features as well. With the ability to have everything secured with one product there is less risk of a complication occurring on a domain or subdomain page that results in the security warnings that drive away your customers.

This also makes management time around SSL certificates very limited. Through the server, it will be easy to maintain the single product rather than potentially having dozens of different SSL/TLS products from a handful of different Certificate Authorities. No more having to go through and check expiration dates or having to deal with complaints after warning messages start popping up on the screen.

For those using Cloud service or a single server, these certificates also prevent the need for each site to have a unique IP address. With the use of the UCC product, the websites can share an IP but still be covered with the cert. This is accomplished through the Subject Alternative Names feature to simply add all the domains you wish to cover with the one product.

We also offer unlimited, free re-issuance if needed. You will also have full Subject Alternative Name control, which provides you with the option to determine which of your domains will be on the certificate and which ones you may want to secure with other or different SSL/TLS products.

While the UC certificate solves many issues and offers a great cost and time-saving features, it is not the right SSL certificate for every situation. If you are using Microsoft Exchange, Office Communications servers or the Live Communication servers it is a top option and one you need to consider.

To find out more information on the UCC, get in touch with our sales staff. They will review your SSL/TLS needs and make suggestions as to the best product or certificate combinations to consider. To talk to us online or to read more go to You can also talk to our team at +1 888 266 6361.

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