Since the original 802.11 standard back in 1999, there have been five major and hundreds of minor revisions. It’s impossible to support an 802.11 network without a working understanding of these standards.
- IPv4 addresses ran out probably in the late 1990s, really. … It took a very special technology … called Network Address Translation that saved us … to the point where now, with IPv6 … finally coming in maturity, we can do it the right way, … but the important thing that I want to show you … right now is that we have a way of setting things up … so that every computer on the Internet … does not have to have its own unique IP address. … We can actually hide them using something called NAT. … Now, here's how NAT works; what I've got here … in front of me is a pretty typical … small office/home office SOHO router. … And this one is for Comcast or Xfinity. … Now there's a bunch of stuff for old-school TVs, … I don't care about that, and here is an out … so I can screw it into my big high-definition, … but there's really only two connections on here. … There's one, this is an F-type that goes up … to my Internet Service Provider, … and then there's a RJ-45 right here, … and that goes out to my switch on my network …
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- How TCP and IP work together
- Special IP addresses
- Port numbers
- Working with DNS
- Basic and advanced router configuration
- Troubleshooting networks
- Connecting to a Wi-Fi network
- Repairing wireless connections