>I would like to have two mysql instances syncing with eachother over
>https.

MySQL doesn't sync over https. It can sync over a MySQL protocol
connection, which can involve (and optionally require) SSL, but
that isn't https.

>So I dont want to do any tunneling or have any ports but 443
>open.

You can have MySQL use any port, but it won't be a https-protocol
connection.

Gordon L. Burditt