IPv6 is the next-generation Internet protocol designed by the IETF as a replacement for IPv4. Most of today's Internet uses IPv4, which has been remarkably resilient in spite of its age; however, it is beginning to have problems in various features areas. . . .. IPv6 is the next-generation Internet protocol designed by the IETF as a replacement for IPv4. Most of today's Internet uses IPv4, which has been remarkably resilient in spite of its age; however, it is beginning to have problems in various features areas. Its most visible shortcoming is the growing shortage of IPv4 addresses needed by all the new devices connecting to the Internet. Other limitations are in such areas as QoS, security, autoconfiguration, and mobility. As a result, the IETF defined IPv6 to fix the problems in IPv4, and added many enhancements to cater the future Internet. This article addresses the problems in IPv4 that lead to the design of IPv6, presenting the IPv6 design philosophies and IPv6 features, as well as a technical tutorial to enable IPv6 support on your Linux machines. The link for this article located at LinuxWorld is no longer available. . IPv6 is the next-generation Internet protocol designed by the IETF as a replacement for IPv4. Most o. next-generation, internet, protocol, designed, replacement. . Anthony Pell
An optical antenna that uses a geometrically shaped lens promises to bring greater security to wireless networks for businesses, according to British scientists. The new device, developed by researchers at the University of Warwick's engineering department, uses a combination of . . . . An optical antenna that uses a geometrically shaped lens promises to bring greater security to wireless networks for businesses, according to British scientists. The new device, developed by researchers at the University of Warwick's engineering department, uses a combination of precise curvatures on the lens and a multilayered filter to achieve its goal. Optical antennas are already available. But this new antenna is so precise, according to the researchers, that it can detect a signal on a single wavelength of light. The scientists, led by professor Roger Green, assert that the device is 100 times more efficient at gathering in a signal than any previous optical sensor of this kind. The link for this article located at CNET is no longer available. . An optical antenna that uses a geometrically shaped lens promises to bring greater security to wirel. optical, antenna, geometrically, shaped, promises, bring, greater, security, wirel. . Anthony Pell
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