How to Install Ncat on Windows and Linux

What is netcat

Ncat is a powerful and flexible networking tool used for debugging, monitoring, and data transfer over TCP/IP. Originally developed as a modern replacement for Netcat, it is now included as part of the Nmap suite. Ncat supports both command-line and scripted use, offering encryption, connection brokering, and port forwarding features. It is available for all major operating systems, including Windows, Linux, and macOS.

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Install nmap on Windows

To install nmap (and ncat as part of nmap) please do follow:

• Login to your server with administrative privileged user;
• Download the installer and run it. Accept the EULA;

• Tick the Ncat tool. You may also tick other utilities if you need it. Then choose install destination, click Install and wait a little;

• Run cmd terrminal and check ncat version;

Checking example

To check ncat is really working, open two terminal windows.

• On the first window run:

• On the second window run:

You can "chat" between the windows:

Install nmap on Linux OS

Setup process on Linux (Ubuntu 20.o4 as example is very simple. Just complete this instruction:

• Authorize as privileged user and run installation command;

Using example the same - open two terminal windows and run these commands:

Conclusion

In this article, we cover how to install and use the Ncat tool on Windows Server 2022 and Ubuntu 20.04 LTS, with clear instructions for both platforms.

FAQ: Ncat Tool

• Q1: What is the difference between Ncat and Netcat?
  Ncat is a modern implementation of Netcat, offering enhanced features such as SSL support, IPv6, connection brokering, and improved security. It is developed as part of the Nmap project and is cross-platform, while traditional Netcat versions may be more limited.
• Q2: Is Ncat included in the Nmap installation?
  Yes. When you install Nmap, Ncat is typically included as an optional component. During installation, make sure the "Ncat" checkbox is selected.
• Q3: What can I use Ncat for?
  Ncat is commonly used for port scanning, data transfer, port forwarding, remote administration, and simple chat between systems via TCP or UDP. It's a versatile tool for network diagnostics and scripting.
• Q4: Can I use Ncat instead of SSH or Telnet?
  In simple use cases, yes — Ncat can establish encrypted connections and remote shells, but it lacks the full authentication and session management capabilities of SSH. It's useful for quick setups, testing, or automation scripts.
• Q5: What if ncat command is not found after installation?
  Ensure the Nmap directory is in your system's PATH environment variable. On Windows, you can re-run the installer and check that Ncat was selected.