Wildcard Certificate
Hello,
I need to set up SSL certificates on multiple subdomains (more than 10) on one domain name. So I actually need Wildcard SSL certificate, and then I choosed Thawte Wildcard SSL certificate. And I thought this is what I need, but when I contacted Thawte they said that I need to pay additional server licenses, so I dont understand this. If I am using F5 and doing SSL offloading, my wildcard SSL certificate is on F5, and I dont need to install it on servers. I'll setup one client profile with wildcard SSL and assign all Virtual Servers, and that will be all. Someone who had experience with same problem?
Assuming all your sub-domains are first-level, you're good to go with the wildcard certificate. Just don't include any sub-domains (SANs) with your purchase requests, you really don't have to, and it might be the reason you received misleading information from them. Any first-level sub-domains will automatically be covered by the wildcard certificate.
With a wildcard certificate, your second-level sub-domains will not be covered (e.g. "https://mysecond.myfirst.maindomain.com"); neither will "https://maindomain.com" be covered.
I recommend reading the information here to learn more about wildcards & sub-domains: https://www.digicert.com/ssl-support/wildcard-san-names.htm