Website SSL certificate renewal
Our business website is currently hosted by comcast (single page website, uploaded/updated via FTP). Although we haven't setup an SSL certificate, Comcast seems to automatically provide a default certificate that is used by the https website. This default certificate is going to expire soon. How do we renew this default certificate?
Alternatively, we could setup/use our own SSL certificate but it's not clear how to do this via FTP or using Comcast SiteBuilder.