Okay on the user id's...
I am sorry- but I am not following you on the "test this internally" part- I do not know what I am doing when it comes to (I guess you mean SSL) certificate. I have read about openSSL, and Let'sEncrypt; but I have not been able to put them all together.
As for external access, this is where I have run into difficulties before- I have not been able to get the necessary network, port forwarding and DNS issues to come together for me.
I do have a web site I can use for this (
www.N8AAY.US) It is hosted at Dotster. I have access to that control panel.
I do have access to my UDM-PRO router too.
Do you have any recommendations? I thank you-