Cisco CloudCenter: Get the Hybrid IT Advantage

Wildcard Secure Socket Layer Certificate (Wildcard SSL Certificate)

Definition - What does Wildcard Secure Socket Layer Certificate (Wildcard SSL Certificate) mean?

A wildcard Secure Socket Layer (SSL) certificate works in the same way as a regular SSL certificate in terms of securing the communication between the server and the client browser, but with the added bonus of being able to use the same certificate for the primary domain as well as all of its sub-domains. Its name may have been derived from the wildcard character that can be used to substitute for any character.

Techopedia explains Wildcard Secure Socket Layer Certificate (Wildcard SSL Certificate)

Wildcard SSL certificates use the Subject Alternative Names (SAN) field to secure all of the first-level sub-domains of a domain. For example, a single wildcard certificate provided for * is usable for, and all other first-level sub-domains. By contrast, a regular SSL certificate can only be used for

The obvious benefit of this is cost savings, as a website owner only needs to pay for a single certificate instead of multiple regular certificates. Of course, this single wildcard certificate costs more than a regular certificate, and it only sees value if there are at least four to five sub-domains for it to be used on.

Share this:

Connect with us

Email Newsletter

Join thousands of others with our weekly newsletter

The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.