Encryption and network security Essay Example for Free

Encryption and network security Essay Honeynets: Observing Hackers’ Tools, Tactics and Motives in a Controlled Environment Solutions to hacker attacks are usually fixes that are developed when damage has been done. Honeynets were solely developed to catch and monitor threats (i. e. a probe, scan or attack). They are designed to gather extensive data about the threats. These data are then interpreted and used for the development of new tools to prevent actual damages to computer systems. Talabis defines a honeynet as a network of high interaction honeypots that simulates a production network and configured such that all activity is monitored, recorded and in a degree, discretely regulated. Seen below is a diagram of a typical honeynet setup as given by Krasser, Grizzard, Owen and Levine. Figure 1 A typical honeynet setup Deployment of honeynets may vary as it is an architecture. The key element of any honeynet is the honeywall. This is the command and control gateway through which all activities come and go. This separates the actual systems from the honeypot systems wherein threats are directed to intentionally. Two more elements are essential in any honeynet. These are discussed below. Data Control Data control is necessary to lessen the risks posed by the captured threats without compromising the amount of data you are able to gather. To do this, connection counting and Network Intrusion Prevention System (NIPS) are used. These are both automated data control. Connection counting limits outbound activity wherein connections beyond the limit are blocked. NIPS blocks or disables known threats before it can attack outbound. The Honeynet Project Research Alliance has defined a set of requirements and standards for the deployment of Data Control. First is the use of both manual and automated data controls. Second, there must be at least two layers of data control to protect against failure. Third, in case of failures, no one should be able to connect to the honeynet. Fourth, the state of inbound and outbound connections must be logged. Fifth, remote administration of honeynets should be possible. Sixth, it should be very difficult for hackers to detect data control. And finally, automatic alerts should be raised when a honeynet is compromised. Data Capture The Honeynet Project identifies three critical layers of Data Capture. These are firewall logs, network traffic and system activity. The data collection capabilities of the honeynet should be able to capture all activities from all three layers. This will allow for the production of a more useful analysis report. Firewall logs are created by NIPS. The Snort process logs network traffic. Snort is a tool used to capture packets of inbound and outbound honeynet traffic. The third is capturing keystrokes and encryption. Sebek is a tool used to bypass encrypted packets. Collected data is hiddenly transmitted by Sebek to the honeywall without the hacker being able to sniff these packets. Risks As with any tool, honeynets are also threatened by risks affecting its usage and effectiveness. These include the risk of a hacker using the honeynet to attack a non-honeynet system; the risk of detection wherein the honeynet is identified by the hacker and false data is then sent to the honeynet producing misleading reports; and the risk of violation wherein a hacker introduces illegal activity into your honeynet without your knowledge. Alerting As mentioned in the requirements and standards set for data control, alerts should be in place once an attack is done to your honeynet. Otherwise, the honeynet is useless. An administrator can monitor the honeynet 24/7 or you can have automated alerts. Swatch is a tool that can be used for this. Log files are monitored for patterns and when found, an alert is issued via email or phone calls. Commands and programs can also be triggered to run. Honeynet Tools Several honeynet tools are available to the public for free so they can setup their own honeynet for research purposes. These tools are used in the different elements of a honeynet. Discussed below are just three of them. Honeynet Security Console This is a tool used to view events on the honeynet. These events may be from SNORTÂ ®, TCPDump, Firewall, Syslog and Sebek logs. Given these events, you will be able to come up with an analysis report by correlating the events that you have captured from each of the data types. The tool’s website lists its key features as follows: quick and easy setup, a user-friendly GUI for viewing event logs, the use of powerful, interactive graphs with drilldown capabilities, the use of simple search/correlation capabilities, integrated IP tools, TCPDump payload and session decoder, and a built in passive OS fingerprinting and geographical location capabilities. Honeywall CDRom Roo This is the recommended tool for use by the Honeynet Project. This is a bootable CDRom containing all of the tools and functionality necessary to quickly create, easily maintain, and effectively analyze a third generation honeynet. Much like the Honeynet Security Console, this tool capitalizes on its data analysis capability which is the primary purpose of why honeynets are deployed – to be able to analyze hacker activity data. GUI is used to maintain the honeywall and to track and analyze honeypot activities. It displays an overview of all inbound and outbound traffic. Network connections in pcap format can be extracted. Ethereal, another tool, can then be used with the extracted data for a more in-depth analysis. Sebek data can also be analyzed by this tool. Walleye, another tool, is used for drawing visual graphs of processes. Although this tool may be useful already, several improvements will still have to be introduced to increase its effectiveness. Walleye currently supports only one honeynet. Multiple honeynets can be deployed but remote administration of these distributed systems still needs to be worked on. Sebek This is a tool used for data capture within the kernel. This is done by intercepting the read() system call. This hiddenly captures encrypted packets from inbound and outbound activities by hackers on the honeypot. Basically, Sebek will tell us when the hacker attacked the honeypot, how he attacked it and why by logging his activities. It consists of two components. First, a client that runs on the honeypot. Its purpose is to capture keystrokes, file uploads and passwords. After capturing, it then sends the data to the server, the second component. The server normally runs on the honeywall where all captured data from the honeypot are stored. Found below is the Sebek architecture. Figure 2 Sebek Architecture A web interface is also available to be able to analyze data contained in the Sebek database. Three features are available: the keystroke summary view; the search view; and the table view which provides a summary of all activities including non-keystroke activities. References Honeynet Security Console. Retrieved October 8, 2007 from http://www. activeworx. org/onlinehelp/hsc/hsc. htm. Krasser, S. , Grizzard, J. , Owen, H., Levine, J. (2005). The use of honeynets to increase computer network security and user awareness. Journal of Security Education, 1, 23-37. Piazza, P. (2001, November). Honeynet Attracts Hacker Attention: The Honeynet Project Set Up a Typical Computer Network and Then Watched to See What Turned Up. Security Management, 45, 34. SebekTM FAQ. Retrieved October 8, 2007 from http://www. honeynet. org/tools/sebek/faq. html. The Honeynet Project. (2005, May 12). Know Your Enemy: Honeynets. What a honeynet is, its value, and risk/issues involved. Retrieved October 8, 2007 from http://www.honeynet. org. Talabis, R. The Philippine Honeynet Project. A Primer on Honeynet Data Control Requirements. Retrieved October 8, 2007 from http://www. philippinehoneynet. org/index. php? option=com_docmantask=cat_viewgid=18Itemid=29. Talabis, R. A Primer on Honeynet Data Collection Requirements and Standards. Retrieved October 8, 2007 from http://www. philippinehoneynet. org/index. php? option=com_docmantask=cat_viewgid=18Itemid=29. Talabis, R. Honeynets: A Honeynet Definition. Retrieved October 8, 2007 from http://www. philippinehoneynet. org/index. php?option=com_docmantask=cat_viewgid=18Itemid=29. Talabis, R. The Gen II and Gen III Honeynet Architecture. Retrieved October 8, 2007 from http://www. philippinehoneynet. org/index. php? option=com_docmantask=cat_viewgid=18Itemid=29. The Honeynet Project. (2005, May 12). Know Your Enemy: GenII Honeynets. Easier to deploy, harder to detect, safer to maintain. Retrieved October 8, 2007 from http://www. honeynet. org. The Honeynet Project and Research Alliance. (2005, August 17). Know Your Enemy: Honeywall CDRom Roo. 3rd Generation Technology. Retrieved October 8, 2007 from http://www. honeynet. org.

Law School Admissions Essay - The Spirit Lives -- Sample Law School Ad

"Hasta la victoria siempre." (Che Guevara) I want to study law so I can help people with problems in the workplace.   I am unhappy with the decrease in real wages, the huge increase in temporary and part-time employment that includes few or no fringe-benefits, and the continued existence of unsafe work places.   I believe that technological advances are going to continue to put people out of work, perhaps on a massive scale, in the next twenty to fifty years, and that government, business, and workers will have a new opportunity to share the gains in productivity that are to come.   I believe that people have the right to work at a job that allows them to afford to raise a family, live in a comfortable, safe home, and work in a safe environment.   I want to devote my work to improving workers' pay levels, assuring them access to health care, paid vacation time, fair treatment by their employers, and physical safety in the work place.   Increasing the number of safe, well-paid, secure jobs will go a long way towards helping alleviate many of the social ills that are associated with poverty.   Ã‚  Ã‚   I was involved with labor issues at my job at the San Francisco International Youth Hostel, where I worked from 1992 to 1996.   I helped organize a group of workers there to discuss our work place and to smooth out scheduling conflicts between management and our group of workers.   In September 1995, part-time staff's holiday pay was taken away without any discussion at all, and I called the Executive Director of the Company the (The Golden Gate Council) and persuaded her to re-institute it.   I was regularly consulted for my opinion on various wage, hour and working-condition matters.   Ã‚  Ã‚   I have seen how working people organize them... ...ing as a community organizer for a volunteer service-exchange program that benefits seniors and the disabled.   the work I am doing reinforces the goals I have of helping solve problems in the workplace.   At my job here in West and South Berkeley, I have again seen the poverty that a dearth of good jobs breeds in a community.   I want to help raise my community's living standards through a more equitable sharing of the resources we transform in our workplaces.   Ã‚  Ã‚   The last thing I can say about myself is that I am interested in almost everything and hope to learn much more about solutions to social problems, science, questions of spirituality and religion, history, visual arts, music, literature, and the list could go on for a while form there.   The curiosity and interest in knowing about the world is an asset that I will take into whatever endeavor I choose.   

Division of the Department of Education Essay

The Cebu City Schools Division of the Department of Education (DepEd) is reminding public school canteens about the policy prohibiting the selling of junk food and softdrinks. According to the Education Program Supervisor Delia Kiamco, they are regularly monitoring public school canteens to ensure that they only sell nutritious food. Business and sanitary permits and other licenses are annually checked by DepEd to assure that the food sold in the canteen are clean and safe. Kiamco said that those who are managing canteens should always bear in mind that service and not profit is the main consideration in operating a school canteen. As provided for under DepEd Order 17, only nutrient-rich and fortified food shall be made available in school canteens. Processed fortified food should bear the ‘Sangkap Pinoy’ seal. Among beverages, only milk, vegetable and fruit shakes and juices are allowed. Kiamco said that in order to curb the malnutrition problem among school children, selling of soft drinks and other carbonated drinks, sugar-based synthetic or artificially flavored juices and junk food are prohibited since these are detrimental to children’s health. DepEd also prohibits the use of mono sodium glutamate or vetsin in food. Only iodized salt should be used to help eliminate the iodine deficiency disorder among school children. School canteen operators are required to post their menu indicating nutritional value on a bulletin board within the school canteen premises. Label dilemma However, Kiamco said that because almost all junk food brands in the market have the â€Å"Sangkap Pinoy† and Fortified seal some canteens justify their sale. â€Å"Sometimes, canteen operators are after money making. We are strongly implementing the food service teachers from selling softdrinks and junk food,† Kiamco said. Kiamco said that they will hold another meeting to decide what action to take on food products with Sangkap Pinoy and Fortified labels. She is asking the public to report to DepEd if there are any public school canteens that still sell prohibited food and drinks. DedEd is also having problems with those selling junk food outside school campuses. â€Å"We cannot do anything against these vendors outside the schools except to remind students not to patronize them,† said Kiamco. /Christine Emily L. Pantaleon, Correspondent

Niccolo Machiavelli s The Prince - 854 Words

Niccolà ² Machiavelli’s The Prince has been both praised and reviled since its publication. In particular, the book’s seventeenth chapter, â€Å"Of Cruelty and Clemency, and Whether it is Better to be Loved or Feared,† controversially posits that an effective leader ought to value being feared over being loved (Machiavelli 43). Though many have questioned the veracity of Machiavelli’s claim, an examination of some of the world’s most effective leaders shows that they led through fear. Alexander the Great, the leaders of the Mongols, and even Hammurabi used fear to maintain their authority and the security of their domains. Alexander the Great led victorious military campaigns from Macedonia to Egypt, Persia, and beyond, establishing a mighty empire all during his brief life of 32 years (Cole et al. 89). He did not accomplish this feat through kindness but through repeated acts of cruelty perpetrated against his enemies, both at home and abroad. The death of Alexander’s father, Philip II, resulted in a number of revolts across Macedonia and Greece (Cole et al. 90). Alexander swiftly established his authority as the new ruler by destroying the city walls of Thebes, the spot of one such revolt (Ibid). This sort of action fits neatly into Machiavelli’s thinking. Machiavelli wrote that, â€Å"†¦ he who quells disorder by a very few signal examples will in the end be more merciful than he who from too great leniency permits things to take their course and so to result in rapine andShow MoreRelatedNiccolo Machiavelli s The Prince1719 Words   |  7 PagesMachiavelli’s, The Prince, a book written by Niccolà ² Machiavelli, is a read that most people wouldn’t prefer to read as a first option but in defense to Niccolo, it brings out many themes such as Goodwill and Hatred, Free will, and Human Nature. â€Å"It is known from his personal correspondence that The Prince was written during 1513, the year after the Medici took control of Florence, and a few months after Machiavelli s arrest, torture, and banishment by the Medici regime† (Bio.com). The novel wasRead MoreNiccolo Machiavelli s The Prince892 Words   |  4 PagesNiccolà ² Machiavelli wrote The Prince with the sole purpose of impressing the Medici family and getting on the good side of the new ruler of Florence, Lorenzo di Piero de’ Medici. By writing this â€Å"handbook to ruling,† Machiavelli hoped to sway the Medici to accept him as an ally and possible political advisor. He was extremely convincing as he used examples from the past as a â€Å"political lesson† to further distinguish his ideas as correct. By seeing the successes and failures of those in power, MachiavelliRead MoreNiccolo Machiavelli s The Prince2212 Words   |  9 Pages Niccolà ² Machiavelli was an Italian diplomat, politician, writer and philosopher who lived during the Renaissance period. He was a significant contributor to modern political science, specifically in the field of political ethics. He wrote his most famous work, The Prince, after the Medici family had returned to power and he was removed from the political scene. The devious and corrupt sort of politicians he describes in The Prince serve as the inspiration for the now commonplace term â€Å"MachiavellianRead MoreNiccolo Machiavelli s The Prince879 Words   |  4 Pages Machiavelli wrote The Prince in 16th-century. His methods of acquiring and maintaining rule over people are not relevant in today’s modern American society. There are many principles that are still true in politics today, but the methods of ruling can no longer be used in American society today. Niccolà ² Machiavelli was born in Florence, Italy in 1496. He was a diplomat in Italy s Florentine Republic for fourteen years. This was during the Medici family exile, and when they returned, MachiavelliRead MoreMachiavelli s The Prince By Niccolo Machiavelli1943 Words   |  8 PagesNiccolà ² Machiavelli’s The Prince is a book that examines the qualities and strategies required for a ruler in order to maintain power. Despite being composed in the 16th century, the ideas presented are applicable even to mythical kings from texts over a thousand years ago. Throughout the story of Seneca’s Oedipus, substantial connections could be made between Oedipus and The Prince’s ideas of rule, such as methods in acquiring principalities, channeling subjects’ fear, the use of cruelty and controllingRead MoreSummary On Niccolo Machiavelli s The Prince 1109 Words   |  5 PagesAssignment - April 19, 2015 Niccolà ² Machiavelli’s The Prince and Ian Johnston’s Lecture on Machiavelli’s The Prince Niccolà ² Machiavelli, a Florentine, lived between the years of 1469-1527. In 1513, Machiavelli wrote The Prince and gifted it to the Medici family with the original title of About Principalities. He first dedicated the work to Giuliano de’ Medici and later to Lorenzo de’ Medici. It was a political critique that was later printed under the title of The Prince in 1532. The treatise wasRead MoreAn Analysis Of Niccolo Machiavelli s The Prince 941 Words   |  4 PagesNiccolo Machiavelli and Karl Marx developed theories concerning wealth and poverty in our society, as well as different types of governments. For instance, Machiavelli supported a capitalist economic system, unlike Marx, who embraced socialism in the society. Machiavelli wrote a book The Prince that explained how to be an effective leader. The theme of the book is the end justifies the means. A person could or should do whatever is necessary to achieve the desired goal. According to MachiavelliRead Mor eNiccolo Machiavelli s The Prince1293 Words   |  6 PagesBy many, Niccolà ² Machiavelli is infamous for being one of the most controversial political philosophers during the period of 1494-1564. Machiavelli is a realist whose lack of idealistic optimism is the root of his cynicism towards human nature and human weakness. He is a perpetuator of the idea that â€Å"the means justifies the end.† Although an ample amount of individuals criticize his principles, many rational thinkers embrace the political realities he so adamantly acquaints his readers with in hisRead MoreNiccolo Machiavelli s The Prince1465 Words   |  6 PagesNiccolà ² Machiavelli had a very negative view when it came to the nature of humans. He made the weakness of human nature the central message of all his writings. Machiavelli’s mannerist cynicism about human weakness came about from wounded idealism, for life had taught him that his early optimism was wrong. In most of his writings, he is mea ning for human nature to restore sanity to a world that he believed to have gone mad. Machiavelli’s most enduring contribution that left the strongest imprintRead MoreNiccolo Machiavelli s The Prince864 Words   |  4 PagesNiccolo Machiavelli, was an Italian diplomat and writer, born on May 3rd, 1469 in Florence, Italy. In his younger years, Niccolo became a diplomat after the downfall of the Medici family in 1494. Machiavelli earned the reputation of vicious since he enjoyed tormenting his associates. In 1512, the Medici family came to power once again and Machiavelli was accused of conspiracy thus was tortured, jailed and nonetheless banished from getting involved in politics and from Florence (Niccolo Machiavelli