The Internet Protocol Journal - Volume 9, Number 4

From the Editor

Internet security and stability are topics we keep returning to in this journal. So far we have mainly focused on technologies that protect systems from unauthorized access and ensure that data in transit over wired or wireless networks cannot be intercepted. We have discussed security-enhanced versions of many of the Internet core protocols, including the Border Gateway Protocol (BGP), Simple Network Management Protocol (SNMP), and the Domain Name System (DNS). You can find all these articles by visiting our Website and referring to our index files. All back issues continue to be available in both HTML and PDF formats. In this issue, Wesley Eddy explains a vulnerability in the Transmission Control Protocol (TCP) in which a sender can overwhelm a receiver by sending a large number of SYN protocol exchanges. This form of Denial of Service attack, known as SYN Flooding, was first reported in 1996, and researchers have developed several solutions to combat the problem.

Speaking of Internet stability, at 12:26 GMT on December 26, 2006, an earthquake of magnitude 6.7 struck off Taiwan's southern coast. Six submarine cables were damaged, resulting in widespread disruption of Internet service in parts of Asia. We hope to bring you more details and analysis of this event in a future issue of IPJ. The topic will also be discussed at the next Asia Pacific Regional Internet Conference on Operational Technologies (APRICOT), which will take place in Bali, Indonesia, February 21 through March 2, 2007.
For details see: http://www.apricot2007.netPop Up Icon

The design and operation of systems that use Internet protocols for communication in conjunction with advanced applications—such as an e-commerce system—require the use of a certain amount of "middleware." This software, largely hidden from the end user, has been the subject of a great deal of development and standardization work for several decades. An important component of today's Web systems is the Extensible Markup Language (XML). Silvano Da Ros explains how XML networking can be used as a critical building block for network application interoperability.

—Ole J. Jacobsen, Editor and Publisher
ole@cisco.com