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Current network use is dominated by content distribution and retrieval yet current networking protocols are designed for conversations between hosts. Accessing content and services requires mapping from the what that users care about to the network's where. We present Content-Centric Networking (CCN) which uses content chunks as a primitive---decoupling location from identity, security and access, and retrieving chunks of content by name. Using new approaches to routing named content, derived from IP, CCN simultaneously achieves scalability, security, and performance. We describe our implementation of the architecture's basic features and demonstrate its performance and resilience with secure file downloads and VoIP calls. [ABSTRACT FROM AUTHOR]

This article investigates the security problems in the 802.11-based data link protocol, Wireless Equivalent Privacy (WEP). It is evident that anyone with a radio receiver can eavesdrop on a wireless local area network (WLAN), and therefore widely acknowledged that a WLAN needs a mechanism to counter this threat. The IEEE 802.11 standard defines a data confidentiality mechanism known as WEP. The security goal of WEP is data confidentiality equivalent to that of a wired LAN. WEP falls short of this objective, which is an intuitively appealing but vague security goal. As a consequence, WEP was insufficiently thought through, and numerous flaws quickly appeared. The discovery of shortcomings led to a process to replace WEP by more robust security protocols. The study of WEP flaws illustrates the difficulties in security protocol design. An understanding of these flaws helps clarify the choices made by the designers of the new protocols. WEP has several serious inherent problems. It does not meet its fundamental goals of wired-equivalent confidentiality.

The Internet can bring down physical barriers to commerce, almost immediately giving even the smallest business access to untapped markets around the world. By the same token, consumers can conduct business and make purchases from organizations previously unavailable to them. Armed with these goals, individuals have flocked to the Internet, and most businesses have set out to set up storefronts on the Internet and its World Wide Web. Just about every major business in the U.S., perhaps in the world, has a home page on the Internet on which can be found information about their services and products. As the Internet grew, the community expanded, and the existing security framework was found lacking. Over the past few years, people have seen evidence of this fact, in the form of Internet-based attacks on commercial systems. Awareness of these attacks has spawned the use of network security tools, such as firewalls, to protect individual networks from attack. More sophisticated attacks can take advantage of basic flaws in the Internet's infrastructure. INSET: Basic Flaws in Internet Infrastructure..