The netstat Command




In this article we will discuss The netstat Command, will make brief discussion on netstat, In last article we discuss about Socket Pairs.



Netstat Command

In computing, netstat (network statistics) is a command-line network utility tool that displays network connections for the Transmission Control Protocol (both incoming and outgoing), routing tables, and a number of network interface (network interface controller or software-defined network interface) and network.



The netstat Command
The netstat Command

Unexplained TCP connections can pose a major security threat. They can indicate that something or someone is connected to the local host. Sometimes it is necessary to know which active TCP connections are open and running on a networked host. Netstat is an important network utility that can be used to verify those connections. As shown in the figure, enter the command netstat to list the protocols in use, the local address and port numbers, the foreign address and port numbers, and the connection state.



By default, the netstat command will attempt to resolve IP addresses to domain names and port numbers to well-known applications. The -n option can be used to display IP addresses and port numbers in their numerical form.

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