openstack创建防火墙

1. firewall. A logical firewall resource that a project can instantiate and manage. A firewall can have one firewall policy.firewall. A logical firewall resource that a project can instantiate and manage. A firewall can have one firewall policy.
   翻译：防火墙。 项目可以实例化和管理的逻辑防火墙资源。 防火墙可以有一个防火墙策略。

2. firewall_policy. An ordered collection of firewall rules. You can share a firewall policy across projects. You can include a firewall policy as part of an audit workflow so that an authorized relevant entity can audit the firewall policy. This entity can differ from the user who created, or the projects that use, the firewall policy.
   翻译：防火墙策略，防火墙规则的有序集合。 您可以跨项目共享防火墙策略。 您可以将防火墙策略作为审核工作流的一部分包含在内，以便授权的相关实体可以审核防火墙策略。 此实体可能与创建的用户或使用防火墙策略的项目不同。

3. **firewall_rule.**A collection of attributes, such as ports and IP addresses. These attributes define match criteria and an action to take, such as allow or deny, on matched data traffic.
   firewall_policy。
   翻译：反火墙规则， 一组属性，例如端口和IP地址。 这些属性定义匹配条件以及对匹配的数据流量采取的操作，例如允许或拒绝。

POST
/v2.0/fw/firewalls
Create firewall