2.netstat？ The-ano command can view the current usage of all ports on this machine.
netstat？ -ano contains PID number. You can check which program called xxx port by comparing the PID number with the task manager.
And netstat -anb checks the process corresponding to the port.
The following figure
3. Enter netstat at the command line? /You can view information about netstat.
C:\ document? And then what? Set up \ Administrator & gtnetstat? /?
Show protocol statistics and current? TCP/IP？ Network connection.
NETSTAT？ [-a]？ [-b]？ [-e]？ [-n]？ [-o]？ 【-p？ proto]？ [-r]？ [-s]？ [-t]？ 【-v】？ [interval]
-a shows all connections and listening ports.
-b display.
Executable component. In some cases, executable components are known.
There are multiple independent components, and in these cases,
A series of components involved in creating a connection or listening port.
Be displayed. In this case, the executable component name
At the bottom? []? At the top is the component it calls.
Wait, until? TCP/IP？ Part. Please note this option.
If you don't have enough permissions, it may take a long time.
It may fail.
-e Displays Ethernet statistics. This option can be used with. Constitute noun plural
Options are grouped together.
-n Displays the address and port number as numbers.
-o Displays the owning process associated with each connection? Id card.
-p？ Prototype display? proto？ Specify the connection of the protocol; proto？ It can be
One of the following agreements:? TCP、UDP、TCPv6？ Or? UDPv6 .
If you use it? -s？ Option to display statistics by protocol. Can be one of the following protocols:
IP、IPv6、ICMP、ICMPv6、TCP、TCPv6、UDP？ Or? UDPv6 .
-r displays the routing table.
-s displays statistics by protocol. By default, show? Intellectual property rights,
IPv6、ICMP、ICMPv6、TCP、TCPv6、UDP？ And then what? UDPv6？ Statistical information of;
-p？ Option is used to specify a subset of default cases.
-t shows the current connection unloading status.
-v and? -B? Option is used together to display the information contained in the.
This creates a connection or listening port for all executable components.
Component.
Interval redisplays the selected statistics between each display.
Pause interval (seconds). News? CTRL+C？ Stop restarting
Show statistics. If omitted, netstat? Show current
Configuration information (displayed only once)