Is Steve Gibson's "Shields Up" still valid? It's what I always use. <a href="https://www.grc.com/x/ne.dll?bh0bkyd2" rel="nofollow">https://www.grc.com/x/ne.dll?bh0bkyd2</a>
I've been using GRC Shields Up all along; would like to try this one too. But, I keep getting this:<p><i>Sorry, but the monkey that does the scanning is kind of busy at the moment. Try again later!</i>
I'm not sure the design of the website matches what it does. It'll probably scare or at least worry a few people into thinking open ports are scary and bad.