Book Image

Python for Security and Networking - Third Edition

By : José Ortega
4 (3)
Book Image

Python for Security and Networking - Third Edition

4 (3)
By: José Ortega

Overview of this book

Python’s latest updates add numerous libraries that can be used to perform critical security-related missions, including detecting vulnerabilities in web applications, taking care of attacks, and helping to build secure and robust networks that are resilient to them. This fully updated third edition will show you how to make the most of them and improve your security posture. The first part of this book will walk you through Python scripts and libraries that you’ll use throughout the book. Next, you’ll dive deep into the core networking tasks where you will learn how to check a network’s vulnerability using Python security scripting and understand how to check for vulnerabilities in your network – including tasks related to packet sniffing. You’ll also learn how to achieve endpoint protection by leveraging Python packages along with writing forensics scripts. The next part of the book will show you a variety of modern techniques, libraries, and frameworks from the Python ecosystem that will help you extract data from servers and analyze the security in web applications. You’ll take your first steps in extracting data from a domain using OSINT tools and using Python tools to perform forensics tasks. By the end of this book, you will be able to make the most of Python to test the security of your network and applications.
Table of Contents (23 chapters)
1
Section 1: Python Environment and System Programming Tools
4
Section 2: Network Scripting and Packet Sniffing with Python
8
Section 3: Server Scripting and Port Scanning with Python
12
Section 4: Server Vulnerabilities and Security in Web Applications
16
Section 5: Python Forensics
20
Assessments – Answers to the End-of-Chapter Questions
21
Other Books You May Enjoy
22
Index

Summary

In this chapter, we reviewed using the socket module for implementing client-server architectures in Python with the TCP and UDP protocols. First, we reviewed the socket module for implementing a client and the main methods for resolving IP addresses from domains, including exception management. We continued to implement practical use cases, such as port scanning and a client-server application with message passing using TCP and UDP protocols. Finally, we implemented our own client-server application in a secure way using SSL sockets.

The main advantage provided by sockets is they maintain the connection in real time, and we can send and receive data from one end of the connection to another. For example, we could create our own chat, that is, a client-server application that allows messages to be received and sent in real time.

In the next chapter, we will explore HTTP request packages for working with Python, executing requests over a REST API, and authentication...