We just saw that the mask determines where the boundary between the network and host portions of the IP address lies. This boundary is important: If it is set too far to the right, there are lots of ...

Many in the industry realize that as we migrate to IPv6 there will be a day when IPv4 is not needed anymore. However, that transition seems daunting and may take decades. In the meantime, ...

I don’t know about you, but it has been a long time since my laptop was assigned a public IPv4 address. Most of the time my laptop has a private RFC1918 IPv4 address. Rarely does my computer have a ...

I'm looking for more information about having IPv4-only devices (embedded, legacy, etc) on a network that is otherwise IPv6-only, with IPv6-only Internet access. It's academic at this point, but I can ...

In this chapter, you will learn about the addressing used in IPv4 and IPv6. We'll assign addresses of both types to various interfaces on the hosts and routers of the Illustrated Network. We'll ...

Network Address Translator, or simply called NAT, is an important part of the device between your LAN and the Internet. It could be located in the router you use to connect the local network to the ...

In April, ARIN, the (North) American Registry for Internet Numbers, announced that it had reached “phase 4” of its IPv4 countdown plan, with fewer than 17 million IPv4 addresses remaining. There is no ...

The end is nearer for IPv4, according to the Internet Corporation for Assigned Names and Numbers (ICANN). May 20 triggered an event that likely signals increased difficulty for Internet service ...