Security groups are network rules that allow instances in one tenant (project) be kept separate from other instances in another. Managing security group rules for our OpenStack instances is done as simply as possible with OpenStack Dashboard.
Note
As described in the Creating tenants in Keystone recipe of Chapter 1, Keystone – OpenStack Identity Service, projects and tenants are used interchangeably and refer to the same thing. Under the OpenStack Dashboard, tenants are referred to as projects, whereas in Keystone, projects are referred to as tenants.
Load a web browser, point it to our OpenStack Dashboard address at http://192.168.100.200/, and log in as a user, such as the demo user created in the Adding users to Keystone recipe of Chapter 1, Keystone – OpenStack Identity Service, with the password openstack.