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You're reading from Python Network Programming Cookbook Practical solutions to overcome real-world networking challenges

Product type Paperback

Published in Aug 2017

Publisher Packt

ISBN-13 9781786463999

Length 450 pages

Edition 2nd Edition

Languages

Python

Tools

HTTP

Concepts

Networking

Authors (3):

Pradeeban Kathiravelu

Gary Berger

Dr. M. O. Faruque Sarker

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Table of Contents (22) Chapters

Title Page

Credits

About the Author

About the Reviewers

www.PacktPub.com

Customer Feedback

Dedication

Preface

1. Sockets, IPv4, and Simple Client/Server Programming FREE CHAPTER

2. Multiplexing Socket I/O for Better Performance

3. IPv6, Unix Domain Sockets, and Network Interfaces

4. Programming with HTTP for the Internet

5. Email Protocols, FTP, and CGI Programming

6. Programming Across Machine Boundaries

7. Working with Web Services – XML-RPC, SOAP, and REST

8. Network Monitoring and Security

9. Network Modeling

10. Getting Started with SDN

11. Authentication, Authorization, and Accounting (AAA)

12. Open and Proprietary Networking Solutions

13. NFV and Orchestration – A Larger Ecosystem

14. Programming the Internet

Finding DNS resource records

You may secure your DNS information with transaction signature (TSIG). This ensures a secured authorized update to DNS record. You may receive the Start of Authority (SOA) information of a host with the DNS lookup utilities host and dig. We first look at host utility followed by dig before looking into the Python code for our current recipe to retrieve the same information:

$ host cnn.comcnn.com has address 151.101.129.67cnn.com has address 151.101.193.67cnn.com has address 151.101.1.67cnn.com has address 151.101.65.67cnn.com has IPv6 address 2a04:4e42:600::323cnn.com has IPv6 address 2a04:4e42:400::323cnn.com has IPv6 address 2a04:4e42:200::323cnn.com has IPv6 address 2a04:4e42::323cnn.com mail is handled by 10 mxb-000c6b02.gslb.pphosted.com.cnn.com mail is handled by 10 mxa-000c6b02.gslb.pphosted.com.$ host axn.comaxn.com has address 198.212.50.74axn.com mail is handled by 0 mxa-001d1702.gslb.pphosted.com.axn.com mail is handled by 0 mxb-001d1702.gslb.pphosted...