Skip to main content

Welcome to the fwknop Documentation Site

The purpose of this site is to help more people understand Port Knocking and provide actionable solutions for implementing it. Through this site, you will learn how to use fwknop to enhance your network security and protect your services from unauthorized access.

What is fwknop?​

fwknop (FireWall KNock OPerator) is a network security tool based on Single Packet Authorization (SPA). It provides a more secure access control mechanism by hiding service ports and encrypting communications. Compared to traditional Port Knocking, fwknop offers higher security and flexibility. You can find the source code on GitHub.

Why Choose fwknop?​

  • Single Packet Authorization (SPA): fwknop uses a single encrypted packet for authentication, making it more efficient than traditional multi-packet knocking.
  • Encryption and Authentication: Supports encryption algorithms like HMAC and AES to ensure secure communication.
  • Hide Service Ports: Through SPA, fwknop can hide service ports, preventing port scanning and brute-force attacks.
  • Cross-Platform Support: fwknop supports Linux, Windows, macOS, IOS, Android, and other operating systems, with cross-platform GUI tools available.

What You Will Learn​

On this site, you will learn the following:

  1. fwknop Deployment Process: Step-by-step instructions for installing and configuring fwknop on both server and client.
  2. fwknop Implementation Principles: A deep dive into how fwknop works, including SPA, encryption mechanisms, and packet transmission.
  3. fwknop Use Cases: Explore how fwknop can protect SSH services, hide ports, and be used in cloud environments.
  4. Who Can Use fwknop: Whether you're a system administrator, developer, or individual user, fwknop has something to offer.
  5. Advantages of fwknop: Learn how fwknop provides higher security and flexibility compared to traditional Port Knocking.
  6. 🔧 Tool Introduction: Discover cross-platform GUI tools that make using fwknop more convenient.

Who Should Use fwknop?​

  • System Administrators: Protect servers from unauthorized access.
  • Network Security Engineers: Enhance network security and prevent port scanning and brute-force attacks.
  • Developers and DevOps: Ensure service security during development and operations.
  • Individual Users: Anyone with a need for network security.

Where can I find the different platform GUI client?​

To find the GUI client for different platforms, navigate to the GUI Tools section of this documentation site. This section provides detailed information and download links for fwknop GUI clients compatible with various operating systems, including Windows, macOS, Linux, IOS and Android.

Getting Started with fwknop​

If you're new to fwknop, we recommend starting with the Deployment Guide to learn how to install and configure fwknop. If you're already familiar with fwknop, you can jump directly to the Implementation Principles or Use Cases. If you are only looking for fwknop's corresponding GUI tools, please navigate to the Tool documentations.

Ready to get started?
👉 Click here to check out the fwknop deployment guide!