System Security   Term Paper ID:31453 Click to get this paper

Essay Subject: Describes firewalls and proxy servers and their implementation.... More...

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Paper Introduction: System Security Introduction Initially the Internet was used by academics and government workerswho did not transact commercial business and who did not send personalinformation over the so-called Information Superhighway With theintroduction of the graphic interface that became the World Wide Web andthe proliferation of commercial sites dedicated to new types of businesstransactions e-commerce the issue of privacy and data protection becameincreasingly important on the Web Companies worried that key internalinformation could be stolen individuals worried that their personalidentities could be stolen and Text of the Paper: The entire text of the paper is shown below. However, the text is somewhat scrambled. We want to give you as much information as we possibly can about our papers and essays, but we cannot give them away for free. In the text below you will find that while disordered, many of the phrases are essentially intact. From this text you will be able to get a solid sense of the writing style, the concepts addressed, and the sources used in the research paper. Since proxy servers prevent individual machines from beingidentified on the Internet, there is considerable advantage to companieswhose employees regularly access the Web as part of their business duties.Another consideration that companies need to take into account is the typeof information that is being accessed. (2 2, November 21). American Banker, p. Security is now a prime consideration forindividuals, companies, and government entities, and a variety ofstrategies have evolved to address security concerns. For data security. Unlike a virus, a worm typically does not modify other programsand usually does not destroy data. 74.Wilby, D. Computerworld, p. Internet Magazine, p. Viruses are not independent programs, butinstead executes only when their host program is run. With theintroduction of the graphic interface that became the World Wide Web andthe proliferation of commercial sites dedicated to new types of businesstransactions (e-commerce), the issue of privacy and data protection becameincreasingly important on the Web. (2 3, Autumn). Thus, companies may use proxy servers to prevent access tounauthorized or objectionable Web pages, or to spot attempts forunauthorized access. 81. (1997, January). This researchaddresses the use of firewalls and proxy servers and considers theirapplication and implementation as protection devices. The virus thenreplicates itself, infecting other programs as it reproduces. Abomb works by triggering some kind of unauthorized action when a particulartime, date or condition occurs. A virus is a code fragment that copies itself into a larger program,thus modifying that program. Indeed, using a proxy server in these situations can result injerkier movements when viewing the pages (Catalano, 1999). A bomb set to go off on a particular date or after someperiod of time has gone by is a time bomb. Set up your browser to use a proxy server. They authenticated requests for information from bothinside and outside the network, scanned incoming files for viruses or othersecurity issues and also checked for inappropriate content. The America's Intelligence Wire, n.p.Thompson, A. Security Management, pp. Proxy Servers Proxy servers have evolved from being just another type of firewall tobeing a key part of an organization's security approach. The Cache catcher. Smoking out the facts on firewalls. (1995, March 2). The Friday the 13th virus and Michelangelo viruses both fell intothis category ("Technologies," 2 4). A bomb that is set to go offwhen a particular event occurs is a logic bomb. A worm is an independent program that reproduces by copying itselffrom one computer to another, most often over a network. During the earliest days of firewalls, this was the main purpose ofproxy servers. 15.Technologies to secure federal systems. Companies worried that key internalinformation could be stolen, individuals worried that their personalidentities could be stolen, and malicious hackers indulged in programmingactivities that shut down entire Web sites or otherwise sabotagedactivities on the Internet. Thus today's proxy servers cachecommonly and frequently accessed Web pages so that users have moreefficient access to the pages and also so that there is a barrier betweenthe user and the actual Web site. Types of Threats Software threats can be classified into several categories that aregenerally tied to the motive behind the breach. In addition, the proxy servers can authenticate the various requeststhat are received for Web data to ensure that the request are genuine andacceptable. Today, theseservers take advantage of low-cost storage and highly efficient machinesthat can process information quickly to combine the functions of a firewallwith the functions of a cache server. Viruses canreproduce immediately, or they may lie dormant until triggered by someevent. If the information is unique andfrequently updated--such as with the news Web sites like cnn.com, a proxyserver will provide little performance benefit since these pages cannotcached. Worms harness increasingly largeamounts of resources and by eventually bringing those resources to thepoint where they can no longer support the machine or the network (Epper,1995). (2 4, March 9). Works CitedCatalano, C. System Security Introduction Initially, the Internet was used by academics and government workerswho did not transact commercial business and who did not send personalinformation over the so-called Information Superhighway. Today, proxyservers are used to improve response time as well as to protect corporateassets; individuals also use proxy servers to protect their anonymity onthe Internet. Computer Weekly, p. 67.Epper, K. Some software threats maybe designed to channel funds from one account into another(personal/professional gain) or to cover up a separate illegal or unethicalact. There are typically two types of bombs:time and logic. In addition to data tampering, threatsinclude viruses, worms, Trojan horses, bombs, trap doors, and spoofs, amongothers. (1999, November 22). A bomb is a specific type of Trojan horse designed to release a virus,a worm or some other type of system attack. Implementation Considerations Companies considering setting up a proxy server need to take intoaccount what type of protection they are seeking to provide through theserver, and whether a proxy server is the best way to provide thatprotection. It can be an independentprogram, or a piece of code planted by a system developer or programmer. As with a virus,a worm compounds the damage it does by spreading rapidly from one site toanother. 24-29.Towner, N. This is data tampering, which can be harmful and costly to anorganization, but which can be approached from the standpoint of preventingor controlling access to data. Proxy servers. From a corporate standpoint, employees and otherstakeholders connected to the network can load commonly accessed Web pages,such as corporate data sites, into the cache for easy reference (Wilby,2 3). Whenever possible, the proxy serverattempts to meet the demand for Web pages from its store of cached pages(Towner, 2 2). Logic bombs are usuallyprogrammed to go off at key moments after installation, such as if thecustomer fails to pay a bill or tries to make an illegal copy (Thompson,1997). 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