Per these Microsoft docs [0], it seems that it should still be possible to open a raw socket on Windows 11, as long as you don't try to send TCP or UDP traffic

Per these Microsoft docs [0], it seems that it should still be possible to open a raw socket on Windows 11, as long as you don't try to send TCP or UDP traffic through it (and have the right permissions, presumably). Of course, to open a raw socket you need privileged access, just like you do on Linux, because a raw socket allows you to see and respond to traffic from any other application (or even system traffic). But in principle you should be able to make a Service that handles SCTP traffic for you, and a non-privileged application could send its traffic to this service and receive data back. I did find some user-space library that is purported to support SCTP on Windows [1], but it may be quite old and not supported. Not sure if there is any real interest in something like this. [0] https://learn.microsoft.com/en-us/windows/win32/winsock/tcp-ip-raw-sockets-2 https://learn.microsoft.com/en-us/windows/win32/winsock/tcp-... [1] https://www.sctp.de/sctp-download.html https://www.sctp.de/sctp-download.html