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I'm running SM Build 7523 (Aug 6, 2020) on a Windows 2008 Server with 32GB RAM, four processors and two RAID5 2TB drives for about 450 clients. Plenty of speed and space. However, the server has been crashing for the past couple days, caused by memory usage going through the roof (90% and higher), and has been super-sluggish the past week. Looking at the logs I can see we're under DOS and other brute force attacks from Russia and Poland. Mostly Russia. I've added three /24 subnets to my blacklist, as well as a few others, but that has only been a temporary fix.
So, is anyone else experiencing this, and if so what did you do to ameliorate the problem.
Here's my Settings > Security > IDS Rules. Any thoughts or suggestions?
Here's my Blacklist:
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