I've been asked by a client to add SSL Certification to their C5 site. My question is:
How do I set C5 to use this.
You can also do that redirection by setting up this setting in your /config/site.php:
Otherwise, it's more about server setup, there isn't any auto-magic in c5 that would manage your server configuration.
If you're running behind a shared server, your hosting provider usually can help you with this. If it's a dedicated server or a virtual server, basically anyone can do it who has basic knowledge about server setups.
Antti / Mainio