I have two UNRAID servers and they are both getting the "Possible Hack Attempt" warnings in Fix Common Problems. The router is a Netgear Orbi router. I have DMZ disabled and I am forwarding port 51820 to one of the servers for Wireguard.
I'm really not sure how they are getting to my servers. Particularly the server that is not using port forwarding at all in the router. If you look at the syslogs they show many attempts (usually messages have 142 or so attempts) using different lo
Your router is "helping" you by repeatedly trying to hack in to all connected devices, ostensibly in the name of alerting you to devices with weak security.
https://community.netgear.com/t5/NETGEAR-Armor/Armor-vulnerability-scan-triggers-temporary-blacklisting-on-my/td-p/1982465