This answered two of my questions on port usage, A, but and B, why my Control Center had been receiving incoming connections. So it seems there is still a way how to enter my MacOS. I almost forgot - my MacOS firewall was set to "blocking all incoming connections". Port 7000 is definitively dangerous to listen on while bad guys nearby.
I used Apple Configurator 2 to get my system back online and here I'm restored and healthy. I had to perform terminal destroy disk keys operation, ( terminal> xartutil -erase-all ) than I have found my iMac like diskless/bricked. Than I realized that hackers have done something to my system options to force me not to revive or restore whole MacOS. Well it does not go well, as the update server was unreachable - strange seemed to me. I erased whole ssd and tried to load fresh new system. I performed power button holding to enter my system options. The hack thing was almost invisible, performed via previously hacked wifi router. -s TCP:LISTEN: used together with -i TCP, causes only network files with TCP state LISTEN to be listed.Unfortunately port 7000 was used to hack my iMac Apple Silicon 2 days ago, to control over my app, updated Xcode from unknown source and also changed Viber messenger.For example, if you are looking for processes using port 8080, you could provide that here, such as -i TCP:8080. The argument here is just TCP but more general internet addresses of the form are accepted as well. -i TCP: filter the listing of files to internet addresses matching the argument.You can see which names are mapped on your system by viewing the /etc/services files. If you are trying to find which which process is running on a port number, it makes it more difficult if you need to think through the names as well. Port numbers can be mapped to names for commonly used services, such as http for port 80. -P: "inhibits the conversion of port numbers to port names for network files".sudo: you need sudo privileges to determine which files are open by other users on your system (and ports are just open files in a large sense).Lsof is a program to "list open files" and variants exist for major UNIX dialects such as macOS and Linux. One could then kill this server using the PID shown. This shows the results for a node http-server listening on port 8080. COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
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