When we want an application to be connected to the internet, then
each application needs to use an available port or socket. Until the
application is terminated, the application uses that port to communicate and
transfer data over the internet. Some applications have dedicated ports, like
HTTP, FTP, SMTP. Some applications do not have any dedicated ports. When they
want to connect to the internet they occupy any random available port. To know
which application is running on which port number then you have to follow these
steps:
Step 1: Open
the Task Manager by pressing Alt,
Ctrl and Delete simultaneously.
![open-task-manager-in-windows8.jpg]()
Step 2: Click
on the File
Tab and
then select
Run New Task:
![task-manager-in-windows8.jpg]()
Step 3: The RUN
window will
pop up; in there type
cmd into
the input area:
![run-prompt-in-windows8.jpg]()
Step 4: Check
the box below to "Create
this task with administrative privileges".
It indicates you have administrative privilege.
![create-task-administrative-privileges-in-windows8.jpg]()
Step 5: A
command Prompt will appear and in the command prompt type
netstat -aon | more and press
Enter.
![cmd-prompt-in-windows8.jpg]()
Step 6: Now
you can see a table where the Local Address column will show you the port
address and the PID column will show the Process Identifier number of the
process. This PID is unique for each and every process.
![cmd-prompt2-in-windows8.jpg]()
Step 7: Now, open
Task Manager and navigate to the Services
tab;
there you can see the PIDs of all running programs.We can see that the RpcEptMapper application
holds the PID 752 and the application is currently running.
![windows8-task-manager.jpg]()
Thus we can easily identify which port is listening to which
program and what are the available ports.