I see; thanks for that.
And no, I don’t know firewall stuff; I am not a web developer, either…that’s why I am using Streamlit …to readily and simply convert a desktop Python program into a web-based one, to explore sharing, etc.
So, I do happen to have some additional privileges in a server box; and, late last night, I found another thread with some brief instructions on how to use docker to launch a streamlit app…it worked; I can now reach my app from any computer.