Netcat, often referred to as "nc", is a versatile command-line networking tool for Unix-like operating systems (such as Linux) and Windows. It provides a number of functions for setting up and managing TCP/IP and UDP connections, and for reading and writing data over these connections.
Features
- TCP/UDP connection setup: Netcat can be used to set up a TCP or UDP connection to a remote host at a specific IP address and port.
- Simple Web Server: It can quickly start a simple web server listening on a specific port and responding to requests.
- Port proxying: Netcat allows you to create simple network proxies by redirecting traffic from one port to another.
- Reading and writing data: It allows the user to send data over the network and receive data from remote hosts. This makes it a useful tool for debugging network protocols and applications.
- UDP support: In addition to TCP, Netcat also supports UDP, which allows the user to send and receive UDP datagrams over the network.
- Use in scripts and automation: Netcat is easy to incorporate into scripts and automated processes due to its simple command line and ability to pass data through standard I/O streams.
Installation
Installing Netcat on Kali Linux is a simple process. Open a terminal and execute the following command:
Running
Creating a TCP server:
To create a TCP server that will listen on a specific port , you can use the following command:
Connecting to a TCP server:
To connect to a TCP server that is running on a specific host and port, you can use the following command:
To transfer a file over a network:
To send a file over a network, you can use the command as follows:
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