Install Netcat On Windows 10
Install Netcat On Linux
Install Netcat

Here's netcat 1.11 compiled for both 32 and 64-bit Windows (but note that 64-bit version hasn't been tested much - use at your own risk).

Netcat client and server modules written in pure Javascript for Node.js. Fully tested modules that implements all the basic netcat's features. To use as standalone tool install the nc package.
Jul 09, 2018 How to install netcat. Its is a cross-platform tool and it is available for Linux, macOS, Windows and BSD. We are going to install netcat on Ubuntu 18.04 machine using apt install or compiling it from source code. Installation using apt is pretty simple, you just need to type the following command in the terminal: sudo apt install netcat.

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I'm providing it here because I never seem to be able to find a working netcat download when I need it.
Small update: netcat 1.12 - adds -c command-line option to send CRLF line endings instead of just CR (eg. to talk to Exchange SMTP)
Netcat

Warning: a bunch of antiviruses think that netcat (nc.exe) is harmful for some reason, and may block or delete the file when you try to download it. I could get around this by recompiling the binary every now and then (without doing any other changes at all, which should give you an idea about the level of protection these products offer), but I really can't be bothered.

1. Overview

In this tutorial, we’ll take a look at the netcat command in Linux. We’ll start with an introduction to the command. Then, we’ll continue with a series of examples that use netcat.

2. Installing netcat

netcat is a powerful networking utility tool. Its purpose is reading and writing data across the network, through TCP or UDP.

2.1. Installing netcat in Debian Based Linux

To install netcat on Debian based Linux (such as Ubuntu), we’ll use the apt-get command: D link 301p ps admin for windows 1080.

Upon installing netcat, a symlink nc pointing to the netcat command will be created.

2.2. Installing ncat in RHEL Based Linux

For RHEL based Linux (such as CentOS) users, we’ll install the ncat program instead of the netcat program.ncat is similar to netcat, except it offers more features than the latter. Despite the differences, examples in this article are compatible with both.

Let’s install the ncat program:

Similar to installing netcat in Debian based Linux, an nc symlink will be created that points to ncat.

For brevity, in the examples that follow, we’ll use nc instead of netcat or ncat when running the command.

3. Scanning for Open Ports Using netcat

We can use netcat to scan for any open ports at a given IP address.

Let’s scan for any open ports at google.com in the range of 442–444:

The command will attempt to connect to google.com on port 442 to 444. From the output, we can see that port 443 is open as the connection attempt is successful.

On the other hand, ports 442 and 444 aren’t open as the connection attempt timed out.

4. Creating a Client-Server Setup

As netcat allows both reading from and writing to network connections, we can build a simple client-server setup.

4.1. Starting up a Server and a Client Process

To start our server, let’s open up a terminal session. Then, we’ll start a netcat server process:

First, the -l flag instructs netcat to listen to the specified port, 1234. Then, the -v flag enables the verbose mode. Once executed, the process will listen indefinitely until it is killed.

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Leaving the server process running, we’ll open up a new terminal session to connect to the server process we’ve stated earlier:

Running that command will open up a netcat process that connects to localhost at port 1234. From the output, it shows that the connection is successfully established.

4.2. Sending Data Bidirectionally

Once we have both the client and server process running, let’s send some data between these two processes. In our client process, we can enter some text and press enter:

Immediately, we can see the exact text on the standard output of the server process.

Install Netcat On Windows 10

Similarly, we can also send something from the server process to the client process. Let’s enter some text on the server process and press enter:

Again, we see that the text from the server process is transferred to the client process.

4.3. Keeping the Server Process Alive

By default, both the server and client netcat processes will return whenever the connection is terminated. We can keep the server netcat process alive using the -k flag.

Concretely, we can start a server that will not terminate when the connected client quits:

5. Setting up a Minimal Web Server

It’s also possible to run a web server using netcat that returns data whenever a client connects to the server.

5.1. Running a Simple Web Server

Let’s first create an index.html file that the server will serve to any connecting clients:

The command above creates an index.html using the cat command.

Then, we’ll start a netcat process that listens to port 1234 and serves the file whenever a client connects to our server:

The command above first constructs a legitimate HTTP response using echo and process substitution. Then, we pipe the response to the netcat process that is listening on port 1234.

Let’s open up our browser and visit localhost:1234.

5.2.

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Install Netcat

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