Tony, 

I think we are agreeing on the same thing. I was replying as a mention to your comment but directed to QB. We do not want to connect intuit account to quickbooks. I attempted to call intuit and spent over an hour on the phone with them and got no where, they spent like 15 minutes just trying to authenticate who I was before even helping. 443 is https traffic on your machine, if you secure 443 you can't access websites that require secure traffic ie google.com which is https. If you manage to use some sort of application filtering or something and secure even with the destination address in the firewall your still going to get the intuit account login simply because it has to make connection to the intuit server to link or create an account and if not it will just give error, you can prove this by just unplugging the ethernet cable from the back of the machine to make the machine offline and testing, it will come up require you to login or create and account and then will bounce back with an error or just disappear but come back again later or even worse will accept the credentials as you being offline and on next online connection will send forwarth the connection at that time. 

Per quickbooks support they do not have a way to circumvent these settings as it is coded to the program unfortunately, if anyone finds a work around or a cheat or QB/Intuit themselves comes up with an alternative I would certainly like to know.