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

Working with security groups in the dashboard

Within the Horizon dashboard, security groups are managed within the Access & Security section under the Compute tab:

Figure 6.13

Creating a security group

To create a security group, perform the following steps.

Click on the Create Security Group button in the upper right-hand corner of the screen. A window will appear that will allow you to create a security group, which is similar to the following screenshot:

Figure 6.14

The Name field is required. When you are ready to proceed, click on the blue Create Security Group button to create the security group.

Managing security group rules

Once created, you will be returned to the Access & Security section, where you can add rules to the security group by clicking on the Manage Rules button of the corresponding group:

Figure 6.15

To delete a rule, click on the red Delete Rule button next to the corresponding security group rule. To add a rule, click on the Add Rule button in the upper right-hand corner...