LinuxNetstat command details

LinuxNetstat command details

NetstatA program that accesses networks and related information in the kernel. It provides reports on TCP connections, TCP and UDP listeners, and process memory management.

Command: Netstat [-a] [-e] [-n] [-o] [-p Protocol] [-r] [-s] [Interval] [1]

OptionThe meaning is as follows:
-A displays all sockets, including those being monitored.
-C is re-displayed every one second until the user interrupts it.
-I: displays information about all network interfaces in the format of "netstat-I ".
-N is replaced by a network IP address to show network connection conditions.
-R displays the core route table in the same format as "route-e ".
-T shows the TCP connection status
-U: displays the connections of the UDP protocol.
-V: displays ongoing work.
-P: displays the specified protocol information.
-B shows the executable programs involved in creating each connection or listening port.
-E displays Ethernet statistics. This option can be used with the-s option.
-F displays the Fully Qualified Domain Name (FQDN) of the external address ).
-O displays the IDs of processes associated with each connection.
-S displays statistics for each protocol.
-X displays NetworkDirect connections, listeners, and shared endpoints.
-Y: displays the TCP connection templates for all connections. Cannot be used with other options.
Interval re-displays the selected statistics. The interval (in seconds) between display pauses. Press CTRL + C to stop resending statistics. If omitted, netstat prints the current configuration information once.

Common command instances

1. netstat-a | more (list all ports, including listeners and ports not listened)

2. netstat-at (list all tcp ports)

3. netstat-au (list all udp ports)

4. netstat-l (list all listening ports) <喎?http: www.bkjia.com kf ware vc " target="_blank" class="keylink"> Vc3ryb25np1_vcd4kpha + PHN0cm9uZz48aW1nIHNyYz0 = "http://www.2cto.com/uploadfile/Collfiles/20141114/2014111409193550.jpg" alt = "\">

5. netstat-lt (list all tcp ports in the listener state)

6. netstat-lu (list all udp ports in the listening status)

7. netstat-lx (list all listening unix ports ).