What is netstat command

You can display the status of TCP and UDP endpoints in table format, routing table information, and interface information. These displays are the most useful for system administration. The syntax for this form is:. The most frequently used options for determining network status are: s , r , and i. See the netstat 1M man page for a description of the options. The result resembles the display shown in the example below. Parts of the output have been truncated. The information can indicate areas where a protocol is having problems.

Note: If the network is slow, test the network speed. Note: Scan for open ports with nmap as an alternative. To see transactions of MTU, receiving and transferring packets in the kernel interface table, use:. Add the option -e to netstat -i to extend the details of the kernel interface table:. Add the -c option to the netstat command to print information every second:. List addresses without support on the system with:.

By default, addresses, port numbers, and user IDs are resolved into human-readable names when possible. Knowing the unresolved port number is important for tasks such as SSH port forwarding. Display Numerical Host Addresses To show only host addresses as numerical, run:. Make use of the grep command to filter the data from netstat. To find a process that is using a particular port number, run:.

There are many netstat options available. Access the list of all the available commands and a short description using:. Note: Check out the Linux commands cheat sheet , which features the netstat command.

To this day, experienced administrators use Command Prompt, the Windows command-line interpreter, for this purpose. If you want to have Windows automatically process a sequence of commands, you can create a batch file. This tutorial will show you how.

Netsh is a versatile command line tool for administrating networks on Windows. Get to know the Netsh commands and find out how to administrate Windows networks comfortably, and efficiently via Windows command prompt.

With a real estate website, you can set yourself apart from the competition With the right tools, a homepage for tradesmen can be created quickly and legally compliant How do you use netstat? Netstat examples In order to make the use of the listed netstat commands for Windows easier to understand, we will show you some example commands: List of all connections for the IPv4 protocol If you don't want to retrieve all active connections, but only all active IPv4 connections, you can do this using the netstat command:.

The output will then look something like this:. To access the statistics for the previous ICMPv6 version 4, replace "icmpv6" with "icmp" in the command shown here. Repetitive query of interface statistics every 20 seconds Use the following netstat command for a repeated query of the interface statistics, which returns new values every 20 seconds on received and sent data packets:.

Display of all open ports and active connections numeric and process ID included One of the most popular netstat commands is undoubtedly to query all open ports and active connections including process ID in numeric form:.

The command netstat -ano lists all open ports and active connections numerically, including process ID. Related products. View packages. Build a real estate website With a real estate website, you can set yourself apart from the competition Handyman website With the right tools, a homepage for tradesmen can be created quickly and legally compliant