Mastering Python Networking: Utilize Python packages and frameworks for network automation, monitoring, cloud, and management, 4th Edition

Preface
    Who this book is for
    What this book covers
    To get the most out of this book
    Get in touch
    Share your thoughts
    Download a free PDF copy of this book
Review of TCP/IP Protocol Suite and Python
    An overview of the Internet
        Servers, hosts, and network components
        The rise of data centers
            Enterprise data centers
            Cloud data centers
            Edge data centers
    The OSI model
    The client-server model
    Network protocol suites
        The transmission control protocol
            Functions and characteristics of TCP
            TCP messages and data transfer
        The user datagram protocol
        The Internet protocol
            IP network address translation (NAT) and network security
            IP routing concepts
    Python language overview
        Python versions
        Operating system
        Running a Python program
        Python built-in types
            The None type
            Numerics
            Sequences
            Mapping
            Sets
        Python operators
        Python control flow tools
        Python functions
        Python classes
        Python modules and packages
    Summary
Low-Level Network Device Interactions
    The challenges of the CLI
    Constructing a Virtual lab
        Physical devices
        Virtual devices
        Cisco modeling labs
            CML tips
        Cisco DevNet
        GNS3 and others
    Python virtual environment
    Python pexpect library
        Pexpect installation
        Pexpect overview
        Our first Pexpect program
        More Pexpect Features
        Pexpect and SSH
        Pexpect complete example
    The Python Paramiko library
        Installation of Paramiko
        Paramiko overview
        First Paramiko program
        More Paramiko features
            Paramiko for servers
        More Paramiko examples
    The Netmiko library
    The Nornir framework
        Downsides of Pexpect and Paramiko compared to other tools
            Idempotent network device interaction
            Bad automation speeds up bad things
    Summary
APIs and Intent-Driven Networking
    Infrastructure-as-Code (IaC)
        Intent-driven networking
        Screen scraping versus API structured output
        Data modeling for IaC
        YANG and NETCONF
    Cisco API examples
        Cisco NX-API
            Lab preparation
            NX-API examples
        The Cisco YANG Model
        The Cisco ACI examples
    Cisco Meraki controller
    The Python API for Juniper Networks
        Juniper and NETCONF
            Device preparation
            Juniper NETCONF examples
        Juniper PyEZ for developers
            Installation and preparation
            PyEZ examples
    The Arista Python API
        Arista eAPI management
            eAPI preparation
            eAPI examples
        The Arista Pyeapi library
            Pyeapi installation
            Pyeapi examples
    VyOS example
    Other libraries
    Summary
The Python Automation Framework – Ansible
    Ansible – A More Declarative Framework
        Ansible Versions
    Our First Ansible Network Example
        The Control Node Installation
        Lab Topology
            The Variable Files
            Our First Playbook
    The Advantages of Ansible
        Agentless
        Idempotence
        Simple and Extensible
    Ansible Content Collections
    More Ansible Network Examples
        Inventory Nesting
        Ansible Conditionals
        Configuration Change
        Ansible Network Facts
        Ansible Loops
            Standard Loops
            Looping over Dictionaries
        Templates
            The Jinja Template Variables
            Jinja Template Loops
            Jinja Template Conditional
    Summary
Docker Containers for Network Engineers
    Docker Overview
        Advantages of Docker
    Building Python applications in Docker
        Installing Docker
        Useful Docker commands
        Building hello world
        Building our application
        Sharing Docker images
        Container orchestration with Docker-compose
    Container networking
        Container host network
        Custom bridge network
        Other container network options
    Containers in the network engineering field
        Containerlab
    Docker and Kubernetes
    Summary
Network Security with Python
    The Lab Setup
    Python Scapy
        Installing Scapy
        Interactive examples
        Packet captures with Scapy
        The TCP port scan
        The ping collection
        Common attacks
        Scapy resources
    Access lists
        Implementing access lists with Ansible
        MAC access lists
    The Syslog search
        Searching with the regular expression module
    Other tools
        Private VLANs
        UFW with Python
    Further reading
    Summary
Network Monitoring with Python – Part 1
    Lab Setup
    SNMP
        Setup
        PySNMP
    Python for Data Visualization
        Matplotlib
            Installation
            Matplotlib – the first example
            Matplotlib for SNMP results
            Additional Matplotlib resources
        Pygal
            Installation
            Pygal – the first example
            Pygal for SNMP results
            Additional Pygal resources
    Python for Cacti
        Installation
        Python script as an input source
    Summary
Network Monitoring with Python – Part 2
    Graphviz
        Lab setup
        Installation
        Graphviz examples
        Python with Graphviz examples
        LLDP neighbor graphing
            Information retrieval
            Python parser script
            Testing the playbook
    Flow-based monitoring
        NetFlow parsing with Python
            Python Socket and Struct
    ntop traffic monitoring
        Python extension for ntop
        sFlow
            SFlowtool and sFlow-RT with Python
    Summary
Building Network Web Services with Python
    Comparing Python web frameworks
    Flask and lab setup
    Introduction to Flask
        Flask versions
        Flask examples
        The HTTPie client
        URL routing
        URL variables
        URL generation
        The jsonify return
    Network resource API
        Flask-SQLAlchemy
        The network content API
        The devices API
        The device ID API
    Network dynamic operations
        Asynchronous operations
    Authentication and Authorization
    Running Flask in containers
    Summary
Introduction to Async IO
    Asynchronous operations overview
        Python multiprocessing
        Python multithreading
    Python asyncio module
    The Scrapli project
        Scrapli example
        Scrapli async example
    Summary
AWS Cloud Networking
    AWS setup
        The AWS CLI and Python SDK
    AWS network overview
    Virtual Private Cloud
        Route tables and route targets
        Automation with CloudFormation
        Security Groups and Network ACLs
        Elastic IP
        NAT gateways
    Direct Connect and VPN
        VPN gateways
        Direct Connect
    Network scaling services
        Elastic Load Balancing
        Route 53 DNS service
        CloudFront CDN services
    Other AWS network services
    Summary
Azure Cloud Networking
    Azure and AWS network service comparison
    Azure setup
    Azure administration and APIs
        Azure service principals
        Python versus PowerShell
    Azure global infrastructure
    Azure virtual networks
        Internet access
        Network resource creation
        VNet service endpoints
        VNet peering
    VNet routing
        Network security groups
    Azure VPNs
    Azure ExpressRoute
    Azure network load balancers
    Other Azure network services
    Summary
Network Data Analysis with Elastic Stack
    What is the Elastic Stack?
    Lab topology
    Elastic Stack as a service
    First End-to-End example
    Elasticsearch with a Python client
    Data ingestion with Logstash
    Data ingestion with Beats
    Search with Elasticsearch
    Data visualization with Kibana
    Summary
Working with Git
    Content management considerations and Git
    Introduction to Git
        Benefits of Git
        Git Terminology
        Git and GitHub
    Setting up Git
        Gitignore
    Git Usage Examples
    Git Branch
        GitHub Example
            Collaborating with Pull Requests
    Git with Python
        GitPython
        PyGitHub
    Automating Configuration Backup
    Collaborating with Git
    Summary
Continuous Integration with GitLab
    The traditional change management process
    Introduction to continuous integration
    Installing GitLab
    GitLab runners
    First GitLab example
    GitLab network example
    Summary
Test-Driven Development for Networks
    Test-driven development overview
        Test definitions
    Topology as code
        XML parsing example
        Python’s unittest module
        More on Python testing
        pytest examples
    Writing tests for networking
        Testing for reachability
        Testing for network latency
        Testing for security
        Testing for transactions
        Testing for network configuration
        Testing for Ansible
    pyATS and Genie
    Summary
Other Books You May Enjoy
Index