Or is there a better alternative (has to be for someone—me—with relatively low tech skills)?
Read about Shields Up here: https://www.lifewire.com/how-to-test-your-firewall-2487969
I trust Steve Gibson and I have listened to his podcast for years. Without trust, his tool does no more than what any other internet citizen can do, so even if you don’t trust it, it’s a trial by gentle fire.
Personally I recommend listening to security now podcast. But then again I’ve worked in IT for 15 years so it’s kind of my thing.
Ps if you want to be scared, look up showdan. Maybe look at showdan YouTube examples.
ShieldsUP is fine. Also check out: https://www.routersecurity.org/testrouter.php
You could also just port scan yourself with something like nmap.
Great! Thank you very much 🙂👍