现在，您已经学习了如何建立基本的规则和链以及如何从信息包过滤表中添加或删除它们。

Now you've learned how to build basic rules and chains and how to add or remove them from the packet filtering tables.

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同样重要的是，OER以授权学习者与老师的方式，揭开商业价值链以前的封闭系统。

Equally important, OER open up a previously closed commercial value chain system in ways that empower learners and teachers.

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在下一部分中，将学习如何将EMF代码集成到供应链Web服务中。

In the next section, you learn how to integrate the EMF code into the supply-chain web service.

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