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 ...

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 ...

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 ...

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 ...

A vibrant market for buying and selling IPv4 addresses is emerging, and policymakers are clarifying the rules associated with how network operators can monetize this precious Internet addressing ...

Just ask any economist: When a commodity is in short supply, several things happen. The price goes up, rationing begins, and people start scrambling for substitutes. Globally unique Internet addresses ...

The Asia-Pacific Network Information Centre (APNIC), which is the organization responsible for distributing IP addresses in most of Asia, Australia, and the Pacific, announced that on April 15, it ...

The shortage of IPv4 addresses has reached a critical stage, according to the registries that allocate internet numbers around the world. The Number Resource Organization (NRO), which represents 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 few blocks of Internet addresses yet to be allocated under the old IPv4 protocol seem to be home to some “hotspots” of unwanted traffic that anyone who gets the addresses would have to pay for, a ...