How check incoming request in Linux / ubuntu from port 80 – http

Check incoming request from port 80

$ netstat -an | grep 80

Check incoming request from port 80 with selected IP address

$ netstat -an | grep 80 | grep 103.173.93.2

Check incoming request from port 80 only ESTABLISHED connection

$ netstat -an | grep 80 | grep ESTABLISHED

Check number of incoming request from port 80

$ netstat -an | grep 80 | wc -l