

I wouldn’t even know where to begin, but I also don’t think that what I’m doing is anything special. These NVR IPs are hurling abuse at the whole internet. Anyone listening will have seen them, and anyone paying attention would’ve seen the pattern.
The NVRs I get the most traffic from have been a known hacked IoT device for a decade and even has a github page explaining how to bypass their authentication and pull out arbitrary files like passwd.
Change swappiness to 10 and ensure that you don’t have anything dynamically adjusting it.