Connection Refused at TCP/IP Level
Guys, i have a web application running on Windows 2025. Occasionally, the application experiences bursts of over 500 simultaneous connections. Even though, the server showing less than 10% CPU utilization and about 75% of RAM still available, I am encountering "connection refused" errors. I can see Windows Performance counter TCPv4 / Connection Failures change when this happens. There is no antivirus deployed during my test, and Windows defender is off. i have seen similar issues on Windows 2019 and 2022 also. I suspected SynAttack detection, but the TCP diagnostic counters for SynAttack detection dont know any values. It appears to me that there is some Windows OS limitation that causes this issue. Does anybody encounter this situation before?Windows Research Kernel Bring it Back!
I think it is time to revive the Windows Research Kernel! We need the community to be able to understand what is going on without letting everything out of the bag. The last version available was v1.2 which was based off of the kernel for Windows XP and Windows Server 2003 SP2. We need a modern release for development, education, and security research. Who is with me?
