Book Image

Learning Python Networking - Second Edition

By : José Manuel Ortega, Dr. M. O. Faruque Sarker, Sam Washington
Book Image

Learning Python Networking - Second Edition

By: José Manuel Ortega, Dr. M. O. Faruque Sarker, Sam Washington

Overview of this book

Network programming has always been a demanding task. With full-featured and well-documented libraries all the way up the stack, Python makes network programming the enjoyable experience it should be. Starting with a walk through of today's major networking protocols, through this book, you'll learn how to employ Python for network programming, how to request and retrieve web resources, and how to extract data in major formats over the web. You will utilize Python for emailing using different protocols, and you'll interact with remote systems and IP and DNS networking. You will cover the connection of networking devices and configuration using Python 3.7, along with cloud-based network management tasks using Python. As the book progresses, socket programming will be covered, followed by how to design servers, and the pros and cons of multithreaded and event-driven architectures. You'll develop practical clientside applications, including web API clients, email clients, SSH, and FTP. These applications will also be implemented through existing web application frameworks.
Table of Contents (19 chapters)
Free Chapter
1
Section 1: Introduction to Network and HTTP Programming
4
Section 2: Interacting with APIs, Web Scraping, and Server Scripting
9
Section 3: IP Address Manipulation and Network Automation
13
Section 4: Sockets and Server Programming

Chapter 6, Interacting with Remote Systems

  1. sshd_config, which is located in the/etc/ssh path.
  2. It is recommended that you use at least a 2048-bit encryption.
  3. We must set the PermitRootLogin variable to no.
  4. You can implement an interactive shell using paramiko. That way, the channel does not close after a command is executed in the remote shell. After creating SSHClient, using connect, you can use the invoke_shell() method, which will open a channel that it doesn't close after you send something through it.
  5. The way paramiko creates SFTP session for downloading files in a secure way from a SSH server is as follows:
import paramiko
ssh_transport = paramiko.Transport(hostname, port)
ssh_transport.connect(username='username', password='password')
sftp_session = paramiko.SFTPClient.from_transport(ssh_transport)sftp_session.get(source_file, target_file)
  1. To retrieve...