Book Image

Learning OpenStack Networking (Neutron)

By : James Denton
Book Image

Learning OpenStack Networking (Neutron)

By: James Denton

Overview of this book

OpenStack Neutron is an OpenStack component that provides networking as a service for other OpenStack services to architect networks and create virtual machines through its API. This API lets you define network connectivity in order to leverage network capabilities to cloud deployments. Through this practical book, you will build a strong foundational knowledge of Neutron, and will architect and build an OpenStack cloud using advanced networking features. We start with an introduction to OpenStack Neutron and its various components, including virtual switching, routing, FWaaS, VPNaaS, and LBaaS. You’ll also get hands-on by installing OpenStack and Neutron and its components, and use agents and plugins to orchestrate network connectivity and build a virtual switching infrastructure. Moving on, you’ll get to grips with the HA routing capabilities utilizing VRRP and distributed virtual routers in Neutron. You’ll also discover load balancing fundamentals, including the difference between nodes, pools, pool members, and virtual IPs. You’ll discover the purpose of security groups and learn how to apply the security concept to your cloud/tenant/instance. Finally, you' ll configure virtual private networks that will allow you to avoid the use of SNAT and floating IPs when connecting to remote networks.
Table of Contents (21 chapters)
Learning OpenStack Networking (Neutron) Second Edition
About the Author
About the Reviewers

Chapter 12. Virtual Private Network as a Service

Neutron includes an advanced service known as Virtual Private Network as a Service, or VPNaaS, which enables users to send and receive data between instances or remote hosts and across secure tunnels. A virtual private network enables users to segment data from other traffic so that only the intended recipient has access. VPNs commonly describe secure connections over a public network, such as the Internet, and can be created by establishing a connection between two endpoints, or peers, through the use of dedicated connections, virtual tunneling protocols, or traffic encryption.

The VPNaaS extension introduces the following network resources that allow users to build IPSec-based virtual private networks:

  • IKE policies: These define the parameters used for phase 1 of an IPSec connection

  • IPSec policies: These define the parameters used for phase 2 of an IPSec connection

  • VPN services: These define the local encryption domain

  • IPSec site connections...