In Search of Reliable Internet Measurement Data

Newspapers and magazines frequently report growth rates of Internet usage, number of users, hosts, and domains that seem to be beyond all expectations. Growth rates are expected to accelerate exponentially. However, Internet measurement data are anything thant reliable and often quite fantastic constructs, that are nevertheless jumped upon by many media and decision makers because the technical difficulties in measuring Internet growth or usage are make reliable measurement techniques impossible.

Equally, predictions that the Internet is about to collapse lack any foundation whatsoever. The researchers at the Internet Performance Measurement and Analysis Project (IPMA) compiled a list of news items about Internet performance and statistics and a few responses to them by engineers.

Size and Growth

In fact, "today's Internet industry lacks any ability to evaluate trends, identity performance problems beyond the boundary of a single ISP (Internet service provider, M. S.), or prepare systematically for the growing expectations of its users. Historic or current data about traffic on the Internet infrastructure, maps depicting ... there is plenty of measurement occurring, albeit of questionable quality", says K. C. Claffy in his paper Internet measurement and data analysis: topology, workload, performance and routing statistics (http://www.caida.org/Papers/Nae/, Dec 6, 1999). Claffy is not an average researcher; he founded the well-known Cooperative Association for Internet Data Analysis (CAIDA).

So his statement is a slap in the face of all market researchers stating otherwise.
In a certain sense this is ridiculous, because since the inception of the ARPANet, the offspring of the Internet, network measurement was an important task. The very first ARPANet site was established at the University of California, Los Angeles, and intended to be the measurement site. There, Leonard Kleinrock further on worked on the development of measurement techniques used to monitor the performance of the ARPANet (cf. Michael and Ronda Hauben, Netizens: On the History and Impact of the Net). And in October 1991, in the name of the Internet Activities Board Vinton Cerf proposed guidelines for researchers considering measurement experiments on the Internet stated that the measurement of the Internet. This was due to two reasons. First, measurement would be critical for future development, evolution and deployment planning. Second, Internet-wide activities have the potential to interfere with normal operation and must be planned with care and made widely known beforehand.
So what are the reasons for this inability to evaluate trends, identity performance problems beyond the boundary of a single ISP? First, in early 1995, almost simultaneously with the worldwide introduction of the World Wide Web, the transition of the stewardship role of the National Science Foundation over the Internet into a competitive industry (bluntly spoken: its privatization) left no framework for adequate tracking and monitoring of the Internet. The early ISPs were not very interested in gathering and analyzing network performance data, they were struggling to meet demands of their rapidly increasing customers. Secondly, we are just beginning to develop reliable tools for quality measurement and analysis of bandwidth or performance. CAIDA aims at developing such tools.
"There are many estimates of the size and growth rate of the Internet that are either implausible, or inconsistent, or even clearly wrong", K. G. Coffman and Andrew, both members of different departments of AT & T Labs-Research, state something similar in their paper The Size and Growth Rate of the Internet, published in First Monday. There are some sources containing seemingly contradictory information on the size and growth rate of the Internet, but "there is no comprehensive source for information". They take a well-informed and refreshing look at efforts undertaken for measuring the Internet and dismantle several misunderstandings leading to incorrect measurements and estimations. Some measurements have such large error margins that you might better call them estimations, to say the least. This is partly due to the fact that data are not disclosed by every carrier and only fragmentarily available.
What is measured and what methods are used? Many studies are devoted to the number of users; others look at the number of computers connected to the Internet or count IP addresses. Coffman and Odlyzko focus on the sizes of networks and the traffic they carry to answer questions about the size and the growth of the Internet.
You get the clue of their focus when you bear in mind that the Internet is just one of many networks of networks; it is only a part of the universe of computer networks. Additionally, the Internet has public (unrestricted) and private (restricted) areas. Most studies consider only the public Internet, Coffman and Odlyzko consider the long-distance private line networks too: the corporate networks, the Intranets, because they are convinced (that means their assertion is put forward, but not accompanied by empirical data) that "the evolution of the Internet in the next few years is likely to be determined by those private networks, especially by the rate at which they are replaced by VPNs (Virtual Private Networks) running over the public Internet. Thus it is important to understand how large they are and how they behave." Coffman and Odlyzko check other estimates by considering the traffic generated by residential users accessing the Internet with a modem, traffic through public peering points (statistics for them are available through CAIDA and the National Laboratory for Applied Network Research), and calculating the bandwidth capacity for each of the major US providers of backbone services. They compare the public Internet to private line networks and offer interesting findings. The public Internet is currently far smaller, in both capacity and traffic, than the switched voice network (with an effective bandwidth of 75 Gbps at December 1997), but the private line networks are considerably larger in aggregate capacity than the Internet: about as large as the voice network in the U. S. (with an effective bandwidth of about 330 Gbps at December 1997), they carry less traffic. On the other hand, the growth rate of traffic on the public Internet, while lower than is often cited, is still about 100% per year, much higher than for traffic on other networks. Hence, if present growth trends continue, data traffic in the U. S. will overtake voice traffic around the year 2002 and will be dominated by the Internet. In the future, growth in Internet traffic will predominantly derive from people staying longer and from multimedia applications, because they consume more bandwidth, both are the reason for unanticipated amounts of data traffic.

Hosts

The Internet Software Consortium's Internet Domain Survey is one of the most known efforts to count the number of hosts on the Internet. Happily the ISC informs us extensively about the methods used for measurements, a policy quite rare on the Web. For the most recent survey the number of IP addresses that have been assigned a name were counted. At first sight it looks simple to get the accurate number of hosts, but practically an assigned IP address does not automatically correspond an existing host. In order to find out, you have to send a kind of message to the host in question and wait for a reply. You do this with the PING utility. (For further explanations look here: Art. PING, in: Connected: An Internet Encyclopaedia) But to do this for every registered IP address is an arduous task, so ISC just pings a 1% sample of all hosts found and make a projection to all pingable hosts. That is ISC's new method; its old method, still used by RIPE, has been to count the number of domain names that had IP addresses assigned to them, a method that proved to be not very useful because a significant number of hosts restricts download access to their domain data.
Despite the small sample, this method has at least one flaw: ISC's researchers just take network numbers into account that have been entered into the tables of the IN-ADDR.ARPA domain, and it is possible that not all providers know of these tables. A similar method is used for Telcordia's Netsizer.

Internet Weather

Like daily weather, traffic on the Internet, the conditions for data flows, are monitored too, hence called Internet weather. One of the most famous Internet weather report is from The Matrix, Inc. Another one is the Internet Traffic Report displaying traffic in values between 0 and 100 (high values indicate fast and reliable connections). For weather monitoring response ratings from servers all over the world are used. The method used is to "ping" servers (as for host counts, e. g.) and to compare response times to past ones and to response times of servers in the same reach.

Hits, Page Views, Visits, and Users

Let us take a look at how these hot lists of most visited Web sites may be compiled. I say, may be, because the methods used for data retrieval are mostly not fully disclosed.
For some years it was seemingly common sense to report requested files from a Web site, so called "hits". A method not very useful, because a document can consist of several files: graphics, text, etc. Just compile a document from some text and some twenty flashy graphical files, put it on the Web and you get twenty-one hits per visit; the more graphics you add, the more hits and traffic (not automatically to your Web site) you generate.
In the meantime page views, also called page impressions are preferred, which are said to avoid these flaws. But even page views are not reliable. Users might share computers and corresponding IP addresses and host names with others, she/he might access not the site, but a cached copy from the Web browser or from the ISP's proxy server. So the server might receive just one page request although several users viewed a document.

Especially the editors of some electronic journals (e-journals) rely on page views as a kind of ratings or circulation measure, Rick Marin reports in the New York Times. Click-through rates - a quantitative measure - are used as a substitute for something of intrinsically qualitative nature: the importance of a column to its readers, e. g. They may read a journal just for a special column and not mind about the journal's other contents. Deleting this column because of not receiving enough visits may cause these readers to turn their backs on their journal.
More advanced, but just slightly better at best, is counting visits, the access of several pages of a Web site during one session. The problems already mentioned apply here too. To avoid them, newspapers, e.g., establish registration services, which require password authentication and therefore prove to be a kind of access obstacle.
But there is a different reason for these services. For content providers users are virtual users, not unique persons, because, as already mentioned, computers and IP addresses can be shared and the Internet is a client-server system; in a certain sense, in fact computers communicate with each other. Therefore many content providers are eager to get to know more about users accessing their sites. On-line registration forms or WWW user surveys are obvious methods of collecting additional data, sure. But you cannot be sure that information given by users is reliable, you can just rely on the fact that somebody visited your Web site. Despite these obstacles, companies increasingly use data capturing. As with registration services cookies come here into play.

For

If you like to play around with Internet statistics instead, you can use Robert Orenstein's Web Statistics Generator to make irresponsible predictions or visit the Internet Index, an occasional collection of seemingly statistical facts about the Internet.

Measuring the Density of IP Addresses

Measuring the Density of IP Addresses or domain names makes the geography of the Internet visible. So where on earth is the most density of IP addresses or domain names? There is no global study about the Internet's geographical patterns available yet, but some regional studies can be found. The Urban Research Initiative and Martin Dodge and Narushige Shiode from the Centre for Advanced Spatial Analysis at the University College London have mapped the Internet address space of New York, Los Angeles and the United Kingdom (http://www.geog.ucl.ac.uk/casa/martin/internetspace/paper/telecom.html and http://www.geog.ucl.ac.uk/casa/martin/internetspace/paper/gisruk98.html).
Dodge and Shiode used data on the ownership of IP addresses from RIPE, Europe's most important registry for Internet numbers.





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Virtual body and data body



The result of this informatisation is the creation of a virtual body which is the exterior of a man or woman's social existence. It plays the same role that the physical body, except located in virtual space (it has no real location). The virtual body holds a certain emancipatory potential. It allows us to go to places and to do things which in the physical world would be impossible. It does not have the weight of the physical body, and is less conditioned by physical laws. It therefore allows one to create an identity of one's own, with much less restrictions than would apply in the physical world.

But this new freedom has a price. In the shadow of virtualisation, the data body has emerged. The data body is a virtual body which is composed of the files connected to an individual. As the Critical Art Ensemble observe in their book Flesh Machine, the data body is the "fascist sibling" of the virtual body; it is " a much more highly developed virtual form, and one that exists in complete service to the corporate and police state."

The virtual character of the data body means that social regulation that applies to the real body is absent. While there are limits to the manipulation and exploitation of the real body (even if these limits are not respected everywhere), there is little regulation concerning the manipulation and exploitation of the data body, although the manipulation of the data body is much easier to perform than that of the real body. The seizure of the data body from outside the concerned individual is often undetected as it has become part of the basic structure of an informatised society. But data bodies serve as raw material for the "New Economy". Both business and governments claim access to data bodies. Power can be exercised, and democratic decision-taking procedures bypassed by seizing data bodies. This totalitarian potential of the data body makes the data body a deeply problematic phenomenon that calls for an understanding of data as social construction rather than as something representative of an objective reality. How data bodies are generated, what happens to them and who has control over them is therefore a highly relevant political question.

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Private data bunkers

On the other hand are the data bunkers of the private sector, whose position is different. Although these are fast-growing engines of data collection with a much greater degree of dynamism, they may not have the same privileged position - although one has to differentiate among the general historical and social conditions into which a data bunker is embedded. For example, it can safely be assumed that the databases of a large credit card company or bank are more protected than the bureaucracies of small developing countries.

Private data bunkers include

    Banks

    Building societies

    Credit bureaus

    Credit card companies

    Direct marketing companies

    Insurance companies

    Telecom service providers

    Mail order stores

    Online stores


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Basics: Acquisition of Copyright

The laws of almost all countries provide that protection is independent of any formalities. Copyright protection then starts as soon as the work is created.

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Positions Towards the Future of Copyright in the "Digital Age"

With the development of new transmission, distribution and publishing technologies and the increasing digitalization of information copyright has become the subject of vigorous debate. Among the variety of attitudes towards the future of traditional copyright protection two main tendencies can be identified:

Eliminate Copyright

Anti-copyrightists believe that any intellectual property should be in the public domain and available for all to use. "Information wants to be free" and copyright restricts people's possibilities concerning the utilization of digital content. An enforced copyright will lead to a further digital divide as copyright creates unjust monopolies in the basic commodity of the "information age". Also the increased ease of copying effectively obviates copyright, which is a relict of the past and should be expunged.

Enlarge Copyright

Realizing the growing economic importance of intellectual property, especially the holders of copyright (in particular the big publishing, distribution and other core copyright industries) - and therefore recipients of the royalties - adhere to the idea of enlarging copyright. In their view the basic foundation of copyright - the response to the need to provide protection to authors so as to give them an incentive to invest the time and effort required to produce creative works - is also relevant in a digital environment.

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Challenges for Copyright by ICT: Internet Service Providers

ISPs (Internet Service Providers) (and to a certain extent also telecom operators) are involved in the copyright debate primarily because of their role in the transmission and storage of digital information. Problems arise particularly concerning caching, information residing on systems or networks of ISPs at the directions of users and transitory communication.

Caching

Caching it is argued could cause damage because the copies in the cache are not necessarily the most current ones and the delivery of outdated information to users could deprive website operators of accurate "hit" information (information about the number of requests for a particular material on a website) from which advertising revenue is frequently calculated. Similarly harms such as defamation or infringement that existed on the original page may propagate for years until flushed from each cache where they have been replicated.

Although different concepts, similar issues to caching arise with mirroring (establishing an identical copy of a website on a different server), archiving (providing a historical repository for information, such as with newsgroups and mailing lists), and full-text indexing (the copying of a document for loading into a full-text or nearly full-text database which is searchable for keywords or concepts).

Under a literal reading of some copyright laws caching constitutes an infringement of copyright. Yet recent legislation like the DMCA or the proposed EU Directive on copyright and related rights in the information society (amended version) have provided exceptions for ISPs concerning particular acts of reproduction that are considered technical copies (caching). Nevertheless the exemption of liability for ISPs only applies if they meet a variety of specific conditions. In the course of the debate about caching also suggestions have been made to subject it to an implied license or fair use defense or make it (at least theoretically) actionable.

Information Residing on Systems or Networks at the Direction of Users

ISPs may be confronted with problems if infringing material on websites (of users) is hosted on their systems. Although some copyright laws like the DMCA provide for limitations on the liability of ISPs if certain conditions are met, it is yet unclear if ISPs should generally be accountable for the storage of infringing material (even if they do not have actual knowledge) or exceptions be established under specific circumstances.

Transitory Communication

In the course of transmitting digital information from one point on a network to another ISPs act as a data conduit. If a user requests information ISPs engage in the transmission, providing of a connection, or routing thereof. In the case of a person sending infringing material over a network, and the ISP merely providing facilities for the transmission it is widely held that they should not be liable for infringement. Yet some copyright laws like the DMCA provide for a limitation (which also covers the intermediate and transient copies that are made automatically in the operation of a network) of liability only if the ISPs activities meet certain conditions.

For more information on copyright (intellectual property) related problems of ISPs (BBSs (Bulletin Board Service Operators), systems operators and other service providers) see:

Harrington, Mark E.: On-line Copyright Infringement Liability for Internet Service Providers: Context, Cases & Recently Enacted Legislation. In: Intellectual Property and Technology Forum. June 4, 1999.

Teran, G.: Who is Vulnerable to Suit? ISP Liability for Copyright Infringement. November 2, 1999.

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The Piracy "Industry"

Until recent years, the problem of piracy (the unauthorized reproduction or distribution of copyrighted works (for commercial purposes)) was largely confined to the copying and physical distribution of tapes, disks and CDs. Yet the emergence and increased use of global data networks and the WWW has added a new dimension to the piracy of intellectual property by permitting still easier copying, electronic sales and transmissions of illegally reproduced copyrighted works on a grand scale.

This new development, often referred to as Internet piracy, broadly relates to the use of global data networks to 1) transmit and download digitized copies of pirated works, 2) advertise and market pirated intellectual property that is delivered on physical media through the mails or other traditional means, and 3) offer and transmit codes or other technologies which can be used to circumvent copy-protection security measures.

Lately the International Intellectual Property Alliance has published a new report on the estimated trade losses due to piracy. (The IIPA assumes that their report actually underestimates the loss of income due to the unlawful copying and distribution of copyrighted works. Yet it should be taken into consideration that the IIPA is the representative of the U.S. core copyright industries (business software, films, videos, music, sound recordings, books and journals, and interactive entertainment software).)

Table: IIPA 1998 - 1999 Estimated Trade Loss due to Copyright Piracy (in millions of US$)





Motion Pictures

Records & Music

Business Applications

Entertainment Software

Books





1999

1998

1999

1998

1999

1998

1999

1998

1999

1998

Total Losses

1323

1421

1684

1613

3211

3437

3020

2952

673

619



Total Losses (core copyright industries)

1999

1998

9910.0

10041.5




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Databody convergence

In the phrase "the rise of the citizen as a consumer", to be found on the EDS website, the cardinal political problem posed by the databody industry is summarised: the convergence of commercial and political interest in the data body business, the convergence of bureaucratic and commercial data bodies, the erosion of privacy, and the consequent undermining of democratic politics by private business interest.

When the citizen becomes a consumer, the state must become a business. In the data body business, the key word behind this new identity of government is "outsourcing". Functions, that are not considered core functions of government activity are put into the hands of private contractors.

There have long been instances where privately owned data companies, e.g. credit card companies, are allowed access to public records, e.g. public registries or electoral rolls. For example, in a normal credit card transaction, credit card companies have had access to public records in order to verify identity of a customer. For example, in the UK citizen's personal data stored on the Electoral Roll have been used for commercial purposes for a long time. The new British Data Protection Act now allows people to "opt out" of this kind of commercialisation - a legislation that has prompted protests on the part of the data industry: Experian has claimed to lose LST 500 mn as a consequence of this restriction - a figure that, even if exaggerated, may help to understand what the value of personal data actually is.

While this may serve as an example of an increased public awareness of privacy issues, the trend towards outsourcing seems to lead to a complete breakdown of the barriers between commercial and public use of personal data. This trend can be summarised by the term "outsourcing" of government functions.

Governments increasingly outsource work that is not considered core function of government, e.g. cooking meals in hospitals or mowing lawns in public parks. Such peripheral activities marked a first step of outsourcing. In a further step, governmental functions were divided between executive and judgemental functions, and executive functions increasingly entrusted to private agencies. For these agencies to be able to carry out the work assigned to them, the need data. Data that one was stored in public places, and whose handling was therefore subject to democratic accountability. Outsourcing has produced gains in efficiency, and a decrease of accountability. Outsourced data are less secure, what use they are put to is difficult to control.

The world's largest data corporation, EDS, is also among the foremost outsourcing companies. In an article about EDS' involvement in government outsourcing in Britain, Simon Davies shows how the general trend towards outsourcing combined with advances in computer technology allow companies EDS, outside of any public accountability, to create something like blueprints for the societies of the 21st century. But the problem of accountability is not the only one to be considered in this context. As Davies argues, the data business is taking own its own momentum "a ruthless company could easily hold a government to ransom". As the links between government agencies and citizens thin out, however, the links among the various agencies might increase. Linking the various government information systems would amount to further increase in efficiency, and a further undermining of democracy. The latter, after all, relies upon the separation of powers - matching government information systems would therefore pave the way to a kind of electronic totalitarianism that has little to do with the ideological bent of George Orwell's 1984 vision, but operates on purely technocratic principles.

Technically the linking of different systems is already possible. It would also create more efficiency, which means generate more income. The question, then, whether democracy concerns will prevent it from happening is one that is capable of creating

But what the EDS example shows is something that applies everywhere, and that is that the data industry is whether by intention or whether by default, a project with profound political implications. The current that drives the global economy deeper and deeper into becoming a global data body economy may be too strong to be stopped by conventional means.

However, the convergence of political and economic data bodies also has technological roots. The problem is that politically motivated surveillance and economically motivated data collection are located in the same area of information and communication technologies. For example, monitoring internet use requires more or less the same technical equipment whether done for political or economic purposes. Data mining and data warehousing techniques are almost the same. Creating transparency of citizens and customers is therefore a common objective of intelligence services and the data body industry. Given that data are exchanged in electronic networks, a compatibility among the various systems is essential. This is another factor that encourages "leaks" between state-run intelligence networks and the private data body business. And finally, given the secretive nature of state intelligence and commercial data capturing , there is little transparency. Both structures occupy an opaque zone.

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International Cable Protection Committee (ICPC)

The ICPC aims at reducing the number of incidents of damages to submarine telecommunications cables by hazards.

The Committee also serves as a forum for the exchange of technical and legal information pertaining to submarine cable protection methods and programs and funds projects and programs, which are beneficial for the protection of submarine cables.

Membership is restricted to authorities (governmental administrations or commercial companies) owning or operating submarine telecommunications cables. As of May 1999, 67 members representing 38 nations were members.

http://www.iscpc.org

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Transmission Control Protocol/Internet Protocol (TCP/IP)

TCP and IP are the two most important protocols and communication standards. TCP provides reliable message-transmission service; IP is the key protocol for specifying how packets are routed around the Internet.

More detailed information can be found here

http://www.anu.edu/people/Roger.Clarke/II/Pri...
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Scientology

Official name Church Of Scientology, religio-scientific movement developed in the United States in the 1950s by the author L. Ron Hubbard (1911-86). The Church of Scientology was formally established in the United States in 1954 and was later incorporated in Great Britain and other countries. The scientific basis claimed by the church for its diagnostic and therapeutic practice is disputed, and the church has been criticized for the financial demands that it makes on its followers. From the 1960s the church and various of its officials or former officials faced government prosecutions as well as private lawsuits on charges of fraud, tax evasion, financial mismanagement, and conspiring to steal government documents, while the church on the other hand claimed it was being persecuted by government agencies and by established medical organizations. Some former Scientology officials have charged that Hubbard used the tax-exempt status of the church to build a profitable business empire.

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Intellectual property

Intellectual property, very generally, relates to the output that result from intellectual activity in the industrial, scientific, literary and artistic fields. Traditionally intellectual property is divided into two branches: 1) industrial property (inventions, marks, industrial designs, unfair competition and geographical indications), and 2) copyright. The protection of intellectual property is guaranteed through a variety of laws, which grant the creators of intellectual goods, and services certain time-limited rights to control the use made of their products.

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Bandwidth

The bandwidth of a transmitted communications signal is a measure of the range of frequencies the signal occupies. The term is also used in reference to the frequency-response characteristics of a communications receiving system. All transmitted signals, whether analog or digital, have a certain bandwidth. The same is true of receiving systems.

Generally speaking, bandwidth is directly proportional to the amount of data transmitted or received per unit time. In a qualitative sense, bandwidth is proportional to the complexity of the data for a given level of system performance. For example, it takes more bandwidth to download a photograph in one second than it takes to download a page of text in one second. Large sound files, computer programs, and animated videos require still more bandwidth for acceptable system performance. Virtual reality (VR) and full-length three-dimensional audio/visual presentations require the most bandwidth of all.

In digital systems, bandwidth is data speed in bits per second (bps).

Source: Whatis.com

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Netiquette

Although referred to as a single body of rules, there is not just one Netiquette, but there are several, though overlapping largely. Proposing general guidelines for posting messages to newsgroups and mailing lists and using the World Wide Web and FTP, Netiquettes address civility topics (i.e., avoiding hate speech) and comprise technical advises (i.e., using simple and platform-independent file formats).
Well-known Netiquettes are the Request for Comment #1855 and The Net: User Guidelines and Netiquette by Arlene H. Rinaldi.

ftp://ftp.isi.edu/in-notes/rfc1855.txt
http://www.fau.edu/netiquette/net/index.html
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Cookie

A cookie is an information package assigned to a client program (mostly a Web browser) by a server. The cookie is saved on your hard disk and is sent back each time this server is accessed. The cookie can contain various information: preferences for site access, identifying authorized users, or tracking visits.

In online advertising, cookies serve the purpose of changing advertising banners between visits, or identifying a particular direct marketing strategy based on a user's preferences and responses.

Advertising banners can be permanently eliminated from the screen by filtering software as offered by Naviscope or Webwash

Cookies are usually stored in a separate file of the browser, and can be erased or permanently deactivated, although many web sites require cookies to be active.

http://www.naviscope.com/
http://www.webwash.com/
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Internet Engineering Steering Group

On behalf of the Internet Society, the Internet Engineering Steering Group is responsible for the technical management of the evolution of the architecture, the standards and the protocols of the Net.

http://www.ietf.org/iesg.html

http://www.ietf.org/iesg.html
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