You're reading from Python for Security and Networking Leverage Python modules and tools in securing your network and applications

Product type Paperback

Published in Jun 2023

Publisher Packt

ISBN-13 9781837637553

Length 586 pages

Edition 3rd Edition

Languages

Python

Concepts

Information Security

Author (1):

José Manuel Ortega

View More author details

Table of Contents (23) Chapters

Preface

1. Section 1: Python Environment and System Programming Tools

2. Working with Python Scripting FREE CHAPTER

3. System Programming Packages

4. Section 2: Network Scripting and Packet Sniffing with Python

5. Socket Programming

6. HTTP Programming and Web Authentication

7. Analyzing Network Traffic and Packet Sniffing

8. Section 3: Server Scripting and Port Scanning with Python

9. Gathering Information from Servers with OSINT Tools

10. Interacting with FTP, SFTP, and SSH Servers

11. Working with Nmap Scanner

12. Section 4: Server Vulnerabilities and Security in Web Applications

13. Interacting with Vulnerability Scanners

14. Interacting with Server Vulnerabilities in Web Applications

15. Obtain Information from Vulnerabilities Databases

16. Section 5: Python Forensics

17. Extracting Geolocation and Metadata from Documents, Images, and Browsers

18. Python Tools for Brute-Force Attacks

19. Cryptography and Code Obfuscation

20. Assessments – Answers to the End-of-Chapter Questions

21. Other Books You May Enjoy

22. Index

Implementing a simple UDP client and UDP server

In this section, we will review how you can set up your own UDP client-server application with Python’s socket module. The application will be a server that listens for all connections and messages over a specific port and prints out any messages to the console that have been exchanged between the client and server.

UDP is a protocol that is on the same level as TCP, that is, above the IP layer. It offers a service in disconnected mode to the applications that use it. This protocol is suitable for applications that require efficient communication and don’t have to worry about packet loss. Typical applications of UDP are internet telephony and video streaming.

The only difference between working with TCP and UDP in Python is that when creating the socket in UDP, you need to use SOCK_DGRAM instead of SOCK_STREAM. The main difference between TCP and UDP is that UDP is not connection-oriented, and this means that there...