View network connections, ports and process

View network connections, ports and process:

lsof command example

Type the following command to see IPv4 port(s), enter:
# lsof -Pnl +M -i4

Type the following command to see IPv6 listing port(s), enter:
# lsof -Pnl +M -i6

Process information
# lsof -p PID

netstat command example


Type the command as follows:
# netstat -patun

OR
# netstat -netpl

View what process listen at port

View what process listen at port

Linux:
$ sudo lsof -i -P -n
$ sudo lsof -i -P -n | grep LISTEN


Windows:
netstat -bano | more
netstat -bano | grep LISTENING
netstat -bano | findstr /R /C:"[LISTEING]"