For years Apple produced network devices like the Airport. They worked quite well. Eventually, Apple decided to discontinue those type of products leaving that niche area to third party vendors. I know many people still have some type of Airport network running, but it is only a matter of time before it becomes untenable and you have to switch to a third party solution. If you have been thinking about doing that, then read this article which lists some basic things you need to setup in replacing your Airport system.