If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields. We are actually running out of addresses but have ...

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 ...

Rate your favorite Cisco Press books. Years of innovation and work to continuously improve various transport technologies and network elements led operators to have high expectations of their networks ...

Internet service providers (ISPs) are running out of public IPv4 addresses and want to move away from IPv4 in their internal network. Mapping of Address and Port with Encapsulation (MAP-E), an IPv6 ...

It is no secret that the 4 billion-plus Internet Protocol Version 4 (IPv4) addresses are just about used up. According, the American Registry for Internet Numbers (ARIN), “phase 4” of its IPv4 ...

But if an IPv6 host sends a packet to another IPv6 host over the Internet, there’s no way to ensure that it won’t be routed through an IPv4 network. One way to make that work is via IP tunneling, ...

As we run out of IPv4 address space, is it time to create an exchange for trading unused address blocks? Ars contributors Iljitsch van Beijnum and Timothy Lee tackle the issue. In this article, ...

The Internet Protocol (IP) developedduring the mid-1970s, is the backbone of a family of protocols thatincludes TCP, UDP, RIP, and virtually every otherprotocol used for Internet communications. The ...

At last month's CanSecWest conference, Philippe Biondi and Arnaud Ebalard showed that nearly all routers and the OSes from the BSD family (including Mac OS X) process the routing header type 0 (RH0) ...