I don't know how to do a port scan.
Checking the logs will not help me do anything, because I don't know what they mean.
Which goes back to my original question. People who don't know what is going on will choose the Smartdefense option. If it is unsafe to give Internet server rights, surely the program default should be to deny it, rather than to grant it. Oh well, I'll just have to be happy living in ignorance....