Netstat Explained | Everything you need to know

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Netstat is a really useful command-line tool to show computer network connections.

Netstat stands for Network statistics, and it is used to identify open ports and the different connections with remote hosts.

Netstat is available on almost every operating system, including Windows, macOS, and Linux.

Computers are always making, maintaining, and closing connections. These connections could be with printers, other computers on the network, web servers over the Internet or any number of things.

Using the netstat command, we can view the details of these connections.

You can use netstat by simply typing it into a command prompt. However, to get the most out of the command, there are several options you can use to customise the output.

Options are great because they let us customise our outputs. However, what makes them really powerful is when we combine the options.

For example, if we wanted to see all connections, we can run:
netstat -a to show all the connections. But we want our output to take only a short time, so we only want to see the IP addresses. So we use -n to show us the numeric value.

But, we don't actually need to type each option separately like this, though. We can simply run: netstat -an

To find a complete list of options, you can type netstat /? on Windows to show the help information or man netstat on MAC and Linux to view the help manual.

00:00 Intro
00:20 What is netstat?
02:10 Notion
04:41 netstat
05:51 netstat -n
06:46 netstat -a
07:29 netstat -p
08:37 netstat -b
09:10 netstat -o
10:29 Combining options
12:04 Bonus option -r
13:37 Outro