In case you're interested in only closing the TCP socket, and not killing the process, I wrote a linux-only PoC: https://github.com/anisse/tcpkill/ https://gith

In case you're interested in only closing the TCP socket, and not killing the process, I wrote a linux-only PoC: https://github.com/anisse/tcpkill/ https://github.com/anisse/tcpkill/ It has two implemented methods: one uses pidfd, the other uses netlink INET_DIAG_DESTROY (like ss -K). CLI UX could be improved, but it does the job.