Managing security groups

At this point, you may think that you should be able to connect to your instance. Not quite yet. There is a layer of security built into OpenStack called security groups. Security groups are firewalls that can be assigned to one or more instances. You can define multiple security groups; you can assign multiple instances to a security group; you can even assign multiple security groups to a running instance. A security group named default is created for each project when the tenant is created. List the existing security groups and you will see multiple with a description Default security group. Then list the rules in the project you are authenticating to:

undercloud# neutron security group list
undercloud# openstack security ...

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