Linux View 80 ports are occupied by what program

There are two ways in which a process is occupied:

The code is as follows	Copy Code
1, NETSTAT-ANL | grep "80"; 2, lsof-i:80

Cases

code is as follows	copy code
[Root@host ~]# netstat-pan | grep:80 tcp      & nbsp 0      0 127.0.0.1:80           0.0.0.0:*                    listen      23903/nginx tcp        0       0 0.0.0.0:8081           0.0.0.0 :*                    listen      23509/httpd

How to terminate a process: Kill PID

about Netstat

The NETSTAT-TLN command is used to view port usage
　
/etc/init.d/vsftp start is used to start the FTP port ~!
　
Look at the file/etc/services
　
Netstat
　
View connected service ports (established)
　
Netstat-a
　
View all service ports (listenestablished)
　
sudo netstat-ap
　
View all service ports and display the corresponding service name
　
Nmap Scan type >< scan parameters