Book Image

Mastering Python Networking - Second Edition

By : Eric Chou
Book Image

Mastering Python Networking - Second Edition

By: Eric Chou

Overview of this book

Networks in your infrastructure set the foundation for how your application can be deployed, maintained, and serviced. Python is the ideal language for network engineers to explore tools that were previously available to systems engineers and application developers. In this second edition of Mastering Python Networking, you’ll embark on a Python-based journey to transition from traditional network engineers to network developers ready for the next-generation of networks. This book begins by reviewing the basics of Python and teaches you how Python can interact with both legacy and API-enabled network devices. As you make your way through the chapters, you will then learn to leverage high-level Python packages and frameworks to perform network engineering tasks for automation, monitoring, management, and enhanced security. In the concluding chapters, you will use Jenkins for continuous network integration as well as testing tools to verify your network. By the end of this book, you will be able to perform all networking tasks with ease using Python.
Table of Contents (15 chapters)

Security

For user authentication security, we will use Flask's httpauth extension, written by Miguel Grinberg, as well as the password functions in Werkzeug. The httpauth extension should have been installed as part of the requirements.txt installation at the beginning of this chapter. The new file illustrating the security feature is named chapter9_9.py; we will start with a few more module imports:

...
from
werkzeug.security import generate_password_hash, check_password_hash
from flask.ext.httpauth import HTTPBasicAuth
...

We will create an HTTPBasicAuth object as well as the user database object. Note that, during the user creation process, we will pass the password value; however, we are only storing password_hash instead of the password itself. This ensures that we are not storing a clear text password for the user:

auth = HTTPBasicAuth()

class User(db.Model):
__tablename__...