Book Image

Mastering Python for Networking and Security - Second Edition

By : José Ortega
Book Image

Mastering Python for Networking and Security - Second Edition

By: José Ortega

Overview of this book

It’s now more apparent than ever that security is a critical aspect of IT infrastructure, and that devastating data breaches can occur from simple network line hacks. As shown in this book, combining the latest version of Python with an increased focus on network security can help you to level up your defenses against cyber attacks and cyber threats. Python is being used for increasingly advanced tasks, with the latest update introducing new libraries and packages featured in the Python 3.7.4 recommended version. Moreover, most scripts are compatible with the latest versions of Python and can also be executed in a virtual environment. This book will guide you through using these updated packages to build a secure network with the help of Python scripting. You’ll cover a range of topics, from building a network to the procedures you need to follow to secure it. Starting by exploring different packages and libraries, you’ll learn about various ways to build a network and connect with the Tor network through Python scripting. You will also learn how to assess a network's vulnerabilities using Python security scripting. Later, you’ll learn how to achieve endpoint protection by leveraging Python packages, along with writing forensic scripts. By the end of this Python book, you’ll be able to use Python to build secure apps using cryptography and steganography techniques.
Table of Contents (22 chapters)
Section 1: The Python Environment and System Programming Tools
Section 2: Network Scripting and Extracting Information from the Tor Network with Python
Section 3: Server Scripting and Port Scanning with Python
Section 4: Server Vulnerabilities and Security in Python Modules
Section 5: Python Forensics

Authentication mechanisms with Python

Most of the web services that we use today require some authentication mechanism in order to ensure that the user's credentials are valid to access it. In this section, we'll learn how to implement authentication in Python.

The HTTP protocol natively supports three authentication mechanisms:

  • HTTP basic authentication: Base64 is based on the HTTP basic authentication mechanism to encode the user composed with a password using the format user: password.
  • HTTP digest authentication: This mechanism uses MD5 to encrypt the user, key, and realm hashes.
  • HTTP bearer authentication: This mechanism uses an authentication based on access_token. One of the most popular protocols that uses this type of authentication is OAuth. In the following URL, we can find the different Python libraries supported by this protocol:

Python supports both mechanisms through the requests module. However, the main...