Python Networking Solutions Guide: Leverage the Power of Python to Automate and Maintain your Network Environment

✍ Scribed by Tolga Koca

• Publisher: BPB Publications
• Year: 2023
• Tongue: English
• Leaves: 395
• Edition: 1
• Category: Library

✦ Synopsis

This book shows the Python programming language's importance and power to automate network devices such as routers, switches, firewalls, system devices like Linux servers, and cloud devices like the AWS platform. It shows to manage and configure thousands of devices with a single script, saving time and preventing faults. This book covers network automation with Python specifically for Network, System, and DevOps engineers. It explains the Python basics from scratch with various features and modules. It covers the most helpful connection methods to login to multiple devices concurrently and manages them with scripts. It explains creating a customized network automation tool with many scripts. This book is divided into 11 chapters. It covers network automation and Python basics, connecting devices with Python, managing devices by scripts, creating a network automation tool, etc.

✦ Table of Contents

1. Introduction to Network Automation
   Structure
   Objectives
   Introduction to network automation
   Benefits of network automation
   Future of networking
   Introduction to Python
   Python usage area
   Python installation
   Python for Windows
   Python for Linux
   Python for MAC
   Running Python codes
   Pycharm installation for Windows
   Install and import Python modules
   Conclusion
   Multiple choice questions
   Answer
   Questions
2. Python Basics
   Structure
   Objectives
   Print and ınput functions
   Print()
   Input ( )
   Data types
   String and integer
   String methods
   List
   List methods
   Dictionary
   Dictionary methods
   Statements and conditions
   If condition
   For statement
   While statement
   Break and continue statement
   Range statement
   For else statement and nested loops
   Try…except statement
   Conclusion
   Multiple choice questions
   Answers
   Questions
3. Python Networking Modules
   Structure
   Objectives
   File handling
   Open function
   OS module
   Word files
   Excel files
   RE modules
   RE module functions
   Special sequences
   Sets in the RE module
   Advanced topics of Python
   Functions
   Functions with parameters
   Functions with default parameters
   Call variables from functions
   Creating modules
   Classes
   Conclusion
   Multiple choice questions
   Answers
   Questions
4. Collecting and Monitoring Logs
   Structure
   Objectives
   Connection modules
   SSH connection
   Paramiko module For SSH
   Connect 1 device with Paramiko
   Running configuration commands with Paramiko
   Connect to multiple devices with Paramiko
   Netmiko module for SSH
   Connect a single device with Netmiko
   Connect to multiple devices with Netmiko
   Telnet connection
   Telnetlib module for telnet
   Connect to multiple devices with telnetlib
   Netmiko module for telnet
   Collecting logs
   Collecting version and device information
   Collecting CPU levels
   Finding duplicated IP address
   Collecting logs with multithreading
   Tools and calculators
   IP address validator
   Subnet calculator
   Conclusion
   Multiple choice questions
   Answers
   Questions
5. Deploy Configurations in Network Devices
   Structure
   Objectives
   Configure network devices
   Configuration of interfaces
   Replacing configurations on files
   Configure devices with Jinja2 template
   Introduction to Jinja2 template
   Introduction to YAML language
   Rendering Jinja template with a YAML file
   Configure devices with Jinja
   If statement in Jinja
   Configure devices with Napalm module
   Collect logs from devices with NAPALM
   Configure devices with NAPALM
   Configure devices with Nornir module
   Configure inventory in Nornir
   Connection to devices with Nornir-Netmiko
   Connection to devices with Nornir-NAPALM
   Configure devices by Nornir and Jinja template
   Conclusion
   Multiple choice questions
   Answers
   Questions
6. File Transfer and Plotting
   Structure
   Objectives
   File transfers
   Backup configuration file with SSH
   File transfer with FTP connection
   File transfer with SFTP connection
   File transfer with Netmiko SCP connection
   Netmiko SCP connection with concurrent module
   File transfer with Nornir SCP connection
   Backup configuration file with SCP
   Plotting data
   Plotting CPU levels
   Plotting interface bandwidth
   Conclusion
   Multiple choice questions
   Answers
   Questions
7. Maintain and Troubleshoot Network Issues
   Structure
   Objectives
   Upgrade network devices
   Alert alarms in devices
   Collect logs with SNMP
   Send logs via email
   Reachability test to network devices
   Ping test script
   Traceroute test script
   Conclusion
   Multiple choice questions
   Answers
   Questions
8. Monitor and Manage Servers
   Structure
   Objectives
   Implement server environment
   Download VMware player and Ubuntu
   Install Ubuntu on VMware
   Activate SSH connection
   Maintain Linux servers
   Collect logs via syslog
   Login servers with secure password
   Collect CPU and memory levels
   Collect interface information
   Collect type and permission of files
   Server configurations
   Create users in servers
   Install packages
   Transfer files with Paramiko
   Reboot servers concurrently
   Stop running processes by script
   Conclusion
   Multiple choice questions
   Answers
   Questions
9. Network Security with Python
   Structure
   Objectives
   Activate security services
   Install and activate the “Firewalld” service on servers
   Configure firewall settings on servers
   Create access lists in network devices
   Manipulate network packets with scapy
   Check logs and configurations
   Check CPU levels periodically with Crontab
   Check router configuration for insecure passwords
   Check port security configuration in routers
   Collect packets from ports with Pyshark
   Conclusion
   Multiple choice questions
   Answers
   Questions
10. Deploying Automation Software
    Structure
    Objectives
    Introduction to InquirerPy module
    Automation tool design
    Create main tool script
    Create subtask scripts
    Network device scripts
    Server scripts
    Other remaining scripts
    Conclusion
    Multiple choice questions
    Answers
    Questions
11. Automate Cloud Infrastructures with Python
    Structure
    Objectives
    Cloud environment deployment
    Introduction to AWS
    Installation of Boto3 and AWS CLI
    EC2 instance management
    Manage EC2 instances with Python
    Connection to EC2 instances
    S3 bucket management
    EBS volume management
    Manage EBS volumes
    Create snapshots of EBS volumes
    Attach EBS volume to EC2 instance
    IAM user management
    Conclusion
    Multiple choice questions
    Answers
    Questions
    Index