Computer Viruses and Known Disinfectants Computer viruses in the world of computing today are a well known threat. ... A virus searches for and attaches itself to a host program. ... They have the potential to infect any computer system. ... Although it is not technically a virus, as it does not require a host. ... By 1995 hundreds of viruses were in circulation spreading from computer to computer over the internet. ...

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In this system, if someone wants computer A to communicate with computer B, there must be a wire or circuit between the two computers. ... Computer A could communicate with any computer in the network. Computer B could also communicate with any of the other computers. ... Since computer time sharing experiments at MIT and at Dartmouth had demonstrated that it was possible to link different computer users to a single computer, the cross country experiment built on this advance." (Cerf, 1993) Working with Thomas Merrill, Roberts linked the TX-2 computer at MIT and the Q-32 comput...

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When I was 12 I was really interested in the Internet and extremely interested by large mainframe type computers, I don't really know why but the immense power of these huge computers intrigued me. I would always visit sites about "legacy" hardware (very old sometimes ancient computer systems). ... We got to know each other and after a while he decided he wanted to try and run a web server (a computer on the Internet that hosts websites). ... The computer was a state-of-the art system with an extremely fast Internet connection. ... The name of the company is "slaque computer services". ...

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Information and the Internet Without standards, there would not be a way for two computers to communicate with one another. ... The internet layer uses directs packets from a source host to the destination host using a different router(s). A route is what is used to describe when a specific message travels between two hosts at the internet layer. ... The data link layer uses switches to govern the movement of messages between a source PC to the computer in which the message is sent to. ... At the internet layer (layer 3) a router is used to transport packets between host computers. ...

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Many ISP's also offer services such as web site building and virtual hosting. ... Your computer connects via modem over a regular old phone line to the ISP's computer, which in turn connects to the Internet backbone with a high-speed link and then routes data between your computer and the Internet backbone. ... I also found out that hosting accounted for almost 30 percent of all business revenues for ISPs. ... Companies such as Verio provide a common ASP scenario, virtual web hosting. These companies provide hardware, software, bandwidth and people to host Web sites for companies...

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DNS allows us to refer to computers by host names as well as by Internet Protocol (IP) addresses. ... DNS allows us to use host names and domain names, which can represent IP addresses. ... A domain name is a computer name suffix shared by a group of computers in the same organization. ... ARP uses only local broadcasts to a hosts or a gateway. ... If an ARP request is initiated from the host to a destination host on a remote network, the ARP request is sent to a router or gateway. ...

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Researchers at four United States campuses created the first hosts of the ARPANET in 1969 connecting Stanford Research Institute, UCLA, UC Santa Barbara, and University of Utah. ... In 1971, the ARPANET grew to 23 hosts connecting universities and government research centers around the country. ... On November 1, 1988, a malicious program called the "Internet Worm" temporarily disabled many Internet host. ... The number of computer host approached 10 million at that time. ... The beginning of the address tells the Internet routers what network you are part of and the right end of the addres...

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How does one get two computers to interact with each other? ... Rules are needed so that the computers know how to communicate. ... Any computer on the same segment of a NetBEUI network can access that network if the NetBEUI protocol is loaded on that computer. ... The server or host computer running FTP accepts commands from the client. ... ARP creates a database that maps the host's IP address to its MAC address. ...

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However, there can also be interception, alteration and retransmission of the data, by braking the line of communication, and passing it through the attacker. 2.8: Viruses and worms: These are the most popular means of attacking and the primal fear of many mainframes as well as private computers. ... When the user runs the program in his computer, the virus or worm becomes active. ... The Solutions: Components of a Secure Internet/Extranet Architecture A secure Internet/extranet Architecture includes the following components: Network Segmentation Firewalls Classific...

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As a side note, Ray Tomlinson is the person who established the @ sign as a domain/host designator from his Model 33 Teletype. ... The theory was tested on Xerox PARCs computers. 1974 saw the launch of TELNET public packet data service. ... In 1984, the number of hosts on the Internet broke 1000, and DNS (Domain Name Services) was introduced. ... By 1989 the number of Internet hosts had capped 100,000, and the first commercial Internet mail service was created by MCI. ... By 1992 the number of hosts on the Internet had exceeded 1,000,000 and the first MBONE audio multicast was made. ...

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In July 1997 there were about 19.5 million hosts on the Internet. For many years it seemed as if the number of hosts were doubling year to year but now it seems to be slowing down significantly. Yet the distribution of hosts by countries and regions hasn't changed much in this period. ... About 81.5 % of worldwide Internet hosts are in the G7-countries, which make up only ten percent of the worlds population. ... Beside these costs and fees, acquiring a computer and a modem is much more expensive in Third World countries. ...

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To communicate among host computers on the same network a protocol titled NCP (Network Control Protocol) was used. ... The number of hosts went from one thousand to one hundred thousand. ... The first commercial Internet dial-up access (world.std.com) was developed. 1992 brought us ISOC (Internet Society) and hosts now reached more than one million. ... At the end of 2002, more than thirty five million hosts exist. ... Telnet is most often used to connect from a home computer to a school's computer or home and office. ...

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They are then able to access information from thousands of other computers. ... Roberts created the first wide-area computer. ... This allowed communications between hosts running in the same network. ... In order to make it easier to use, the Host computers were assigned names, replacing numbers (Comer 41). ... Government computers are just as vulnerable. ...

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files onto computer hard drives. ... Several of these companies used Orwellian computer software that was initially offered for only $99 and had the ability to screen and record every keystroke on the computer with video like precision. ... Another major concern within computer security is electronic attacks by computer hackers on government and business computers. ... Even though it may seem immediate, an e-mail message travels from one's computer to several computer hosts across the world before finally reaching its destination. At every stopping point, it could be intercepted and e...

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However, as this new technology become more and more common in the society, the price of the personal computer become more affordable and reasonable to the public so that more and more people can pay for a personal computer. ... In another words, the personal computers popularisation greatly enlarges the network of Internet as more people have a computer, the fundamental needs for Internet, to get online. ... This software enable computers using various carriers such as telephone line, cable TV and satellite channels to send different form of data like text messages, sound file or an image to ...

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With today's growing use of computers and the internet a whole new world know has cyberspace has taken shape. ... Computers and the internet are merely tools to access this median between users and the massive amounts of information available. ... It is quite cheap and fairly easy to accumulate thorough information about people because of the advances in computer technology. ... Even though it may seem immediate, an e-mail message travels from ones computer to several computer hosts across the world before finally reaching its destination. At every stopping point, it could be intercep...

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Introduction We all know that computers are the most useful and convenient tool in this age. ... Since 135 countries have access, 54 world cities are the major hosts, and 72 million people logon every day, we can easily assume that cyber-space is indeed a very large place and is continuing to expand on a daily basis. ... The cyber-terrorist can very well target government agencies, private institutions, public institutions, educational institutions, corporation computers, individual computers and so on. ... This is especially true for the computer industries. ... The word "hacker" is a slang...

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The number of host computers "those that store information and relay communications "increased from about 300 in 1981 to approximately 9,400,000 by the time of the trial in 1996. Roughly 60% of these hosts are located in the United States. ... Sites will be censored by a certain code that is relayed to the computer when the Internet navigator tries to enter the site. The computer will send a request and the site will send an answer, or a code that will trigger the software telling it that this is an adult site; thus, children cannot browse the site. ...

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The computer workstation can also transfer data to PDA's and laptop computers. ... Replace case computer case then place computers in final locations within your home. ... Set the IP address on each computer to the following: Computer 1- 192.168.1.2 Computer 2- 192.168.1.3 Computer 3- 192.168.1.4 The IP address of 192.168.1.1 is the IP address of the router. ... Input the Host Name and domain name provide by your ISP (AT&T). ... Conclusion Home computer networks provide families with many of the same computer features as a large com...

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The Internet is a computer application that connects tens of thousands of interconnected computer networks that include 1.7 million host computers around the world. The basis of connecting all these computers together is by the use of ordinary telephone wires. Users are then directly joined to other computer users at there own will for a small connection fee per month. ... It is just as simple as making a selection at a regular store, only you are using the computer and probably using a credit card as the method of payment. ... Making the computer web site user friendly could greatly encourage...

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How to Shield Your Computer from Internet Crime When you connect to the Internet, you are allowing you computer to communicate with millions of people who are also on the Internet. ... One very good website is hosted by the Gibson Research Corporation and has several helpful feature like "Shields Up", the address for this site is www.grc.com. ... One of the easiest and most effective would be to turn off file and print sharing for your computer. ... Hardware involves connecting your computer into another device. ... Using Zone Alarm, the above sites could find no exposed ports or even th...

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Another form of recruitment is through video games; white-power versions of popular teenage computer games appear on the Internet, so that teens looking for the latest cool game may find the "hate version" instead. ... Many hate sites have common web hosts. Some web hosts for racists include the Canadian Freedom Site, Front 14, Posse-Comitatus, Skinheadpride, Stormfront, White Pride World Wide, and World Church of the Creator-Webhosting Services. ...

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One of these many inventions of the modern world is electronic mail, otherwise known as E-mail, a computer based mailing system using the Internet as its host. ... Computer glitches can happen causing e-mail to be sent to the wrong place or not sent at all. ...

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The intranet hosts all kinds of company-related information. ... Once a decision is made to change, add, or delete anything the pages are amended and then uploaded directly from the author's computer in the pharmacy information department on to the server. This means that the new version is available to all computers on the intranet immediately. ...

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• Grade Level: Undergraduate

The Internet is a vast collection of computers that are interconnected through Internet Service Providers (ISP's) and are catalogued by DNS servers. ... All content is stored on other computers and requested as needed, so "surfing" the "net does not take a lot of storage space. ... They not only provide web mail to hundreds of thousands of people, but also free web hosting. ...

• Word Count: 717
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• Grade Level: High School