Summary

In this chapter, we have covered topics like where the Internet came from, some of the design considerations that went into it, and why firewalls are important and fit into the grand scheme of things. We also took a look at basic networking, including how network layers are significant and what they do, some different types of firewall, and some other services firewalls may operate.

We should by this point have a relatively good understanding of the scope of the protocols and technology used in IPCop. We may also have identified some technologies that you hadn't heard of or didn't understand—don't worry, this is a good thing! If so inclined, there is plenty of scope to learn about these technologies based on the information summarized here and the links given to other resources.