SSL Certificates in Multisite

Hi there,

I have a standard SSL certificate installed on my multisite (it was required in order to receive a dedicated IP address). I don't have SSL on any of my sub sites, so when I attempt to administer the individual sites I'm always presented with the Google "Your connection is not private" page. Is there any way around this? Can I force SSL on the parent site, but keep all the sub sites as a standard connection?

I am able to access the sites' admin panels, but they always have the https crossed through.