Linux PORT command

LINUX network performance management tool sanjianke this article describes how to manage Linux to view the output information of the port. This command will display the outgoing headers from each packet and the address of port 80 from the host hostname. The Netstat-tln command is used to check port usage in Linux./etc/init. d/vsftp start is used to start the ftp port ~! View File/etc/services netstat Linux view port view connected service port (ESTABLISHED) netstat-a Linux view port view all service ports (LISTEN, ESTABLISHED) in sudo netstat-ap Linux, view all service ports and display the corresponding service program name nmap <scan type> <scan parameters> for example: www.2cto.com nmap localhost nmap-p 1024-65535 localhost nmap-PT 192.168.1.127-245 when we use netstat-apn to view network connections, we will find a lot of content similar to the following: proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 52 218.104.81.152: 7710 211.100.39.250: 29488 ESTABLISHED 6111/1 indicates that port 7710 is opened on this server. Which program does this port belong? We can use the lsof-I: 7710 COMMAND to query: COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME sshd 1990 root 3u IPv4 4836 TCP *: 7710 (LISTEN, as we can see, port 7710 belongs to the sshd program.
Author tankywang