IDS compares Essay Example for Free

IDS compares Essay These techniques usually base their performance on two detection paradigms as the main attacks in spite of whether they are network or hot based architecture. Some of these models are the misuse detection models and anomaly detection models. The misuse detection model, the IDS compares the new sequences of the parameters in the input. The application matches the commands of the HTTP protocol where a database of signatures which signify the attacks that have been identified and classified before is known (Aquino et al, 2008). This model revises and improves the disruptive commands when it experiences attacks. The misuse detection model is not the best model to be used and it’s used as an alternative for efficiency in the medium. It can be lead to the new variations of the attacks experienced before to elude the network security. The anomaly detection model detects interruption by searching abnormal network traffic. It detects deviation by finding patterns on data from internet (Aquino et al, 2008). Example The testing of multilayer feed forward network can be done using two layers which are hidden and have15 neurons each and a 5 output neurons for a 5 possible attacks. The network is then equipped with a flexible transmission algorithm with the neurons being sigmoid. After being trained with a dataset of 70 % it reaches a predictable error target of 0. 015 upon completion of the training sequence. When choosing the number of neurons per hidden layer, the calculation is done by subtracting the number of neurons in the output layer from the number of inputs in the system (Aquino et al, 2008). Advantages and Disadvantages Voip protocol is a security system which is designed in such a way that it optimizes the communication of aural by the use of internet (Millions, 2008). Comparing Voip (Voice over Internet Protocol) to other security protocols, there are a number of advantages which makes Voip remain the choice of many in the present world. Therefore, Voice over Internet Protocol is efficient when it comes to their cost. Voip uses public switched telephone network. The IPSec secures the low level system packets in order for the system of computers to be protected over insecure channels which are inclusive of internet and hire lines. Voip can easily add more lines whereas the other protocols cannot. It is hard to break into the safety of the system especially when there is encryption. Once there is power failure phones can still be used (Millions, 2008). Disadvantages There is occurrence of inconveniences in the structure once there is a large torrent of information being transferred in Voip. There is also a possibility of jitter data transfer conundrum occurrence in the system if the right precautions are not taken. Due to difficulty in the relocation of information, this can result to low overhaul superiority. Therefore, this can result into failure of the voice for the final consumers (Millions, 2008). Cryptanalysis Report Organizations are faced with the problem of receiving encrypted messages from their clients. In order to support the clients, organizations need to understand how to decrypt the encrypted messages. In most cases, the management of the organization and the clients usually use a single-key also known as the private-key in the encryption and the decryption of the messages. This kind of encryption is known as symmetrical encryption and is widely used by many people. The original message is usually referred to as a plaintext while the encrypted message is referred to as a ciphertext (Brown, 2007, p. 4). In symmetric algorithm, the same key is used for both the encryption and the decryption process (Vajda, 2003, p.3). The algorithm that the sender uses for changing the plaintext to a ciphertext is known as cipher. Since Charles Smith, a full-time associate in McKay IT service went on a business trip without carrying the logbook of the security protocols, there is need of using the process of cryptanalysis. This is method of code breaking the ciphertext without the use of the private key (Brown, 2007, p. 4). The process by which an original message is encrypted is shown by the formula E (M) = C. in which E is the function of encryption, M is the message and C is the Ciphertext. For decrypting the ciphertext, the receiver needs to use the formula D (C) = M so as to get the original message. In which D is the function of decryption, C is the Ciphertext and M is the original message (Vajda, 2003, p. 1). The algorithms of encryption and decryption use the private key known to the sender and the receiver only. Therefore, the proper formula to use in both the encryption and decryption process is C = EK (M) and M = DK (C) in which K is the private Key (Vajda, 2003, p. 1). Cryptanalytic attacks occur when a person attempts a cryptanalysis of a ciphertext (Vajda, 2003, p. 3). There are different types of cryptanalytic attacks from the sender. But for the purpose of this study, the ciphertext only attack will be used. This is because Charles and I as the consultant only know the ciphertext (Brown, 2007, p. 9). A person can use brute force search in the process of cryptanalysis by trying all possible keys (Brown, 2007, p. 11). Plaintext letter are usually substituted by number, symbols or even other letter to form the ciphertext. In this case, ciphertext that have been sent by the client has been replaced by other letters as shown For an effective cryptanalysis, one needs to know the type of cipher that was used. One should also measure the complexity of the attack to ensure effective cryptanalysis such as complexity of the data. Complexity of the data is the data amount that needs to be decrypted. The complexity of the process also needs to be measured such as the time needed for performing the attack. Lastly, one needs to have enough storage memory for the performing the attack (Vajda, 2003, p. 6). In ciphertext only attacks, given that C1 = Ek (P1) and Ci = Ek (Pi). In deducing P1 and Pi, Ci + 1 = Ek (Pi + 1). In cases, where the ciphertext only is available, it is hard to recover the plaintext. Therefore one can use the cryptanalysis of the Caesar cipher by trying the possible 25 shifts of keys in order to substitute the letters in the ciphertext to get the plaintext (Brown, 2007). One way of avoiding the cryptanalysis is by ensuring that the private key is only known to the sender and the receiver of the message. People should also ensure that while sending the encrypted, they give the sender the hint of the key used. Conclusion Appropriate models of computer security protocols have been proposed all through the discussion. Attacks in the system security protocols can be detected by the use of different models. These models include the misuse detection models and anomaly detection models. The attacks that influence the protocols lead to delays in the security system. Services can be denied through a brute force attack on the server processing speed or the band width. If the security qualification of the server has part of it as authentication value, then the computation is necessary in response to every qualification request which is valid. References Alarcon-Aquino, V. , Mejia Sanchez, J. A. , Rosas-Romero, R. , Ramirez-Cruz, J. F. (2005). Detecting and Classifying Attacks in Computer Networks Using Feed-forward and Elman Neural Networks. Proceedings of the 1st European Conference on Computer Network Defense, EC2ND 2005. Wales, UK: Springer Verlag. Aquino, V. A. , Clavel C. A. , Asomoza J. R, Starostenko, O. , Romero, R. R. (2008). Intrusion detection and Classification of attacks in High-Level Network protocols Using Recurrent Neural Networks. Retrieved December 18, 2008, from http://www.articleworld.org/Technology

Essay --

Cassandra Casares 2-11-14 Paper #1 Marius paved the road that inspired many to follow in his footsteps, as Caesar and Octavian, which led to the breakdown of the Republic. Marius held consulship for a record breaking seven years, completely disregarding the Lex Annalis, and leaving the senate looking slightly powerless in the eyes of its people. Also, Marius used war and corruption on his side in order to hold his political power in Rome, knowing full well he was needed to fend off invasions especially from the north. By abolishing the Servian laws, he also allowed the landless and the poor to join in the army, which created status problems for the Romans, and encouraged others to follow right along with his creation of a professional, private army through the Marian Laws and reforms. Gaius Marius put into affect army reforms that changed the military, political and social aspects of Roman society. These reforms brought about private professional armies, enlarged aristocratic values by increasing wealth, and event ually led to the exploitation of legal and political faults to boost personal power that all together helped to disestablish the republic. One important aspect of Roman life is that of tradition. By Marius consecutively holding seven consulships in a row and doing so whilst not present for some strayed away from political tradition and enabling actions of later romans. Because of a foreign threat up north of Rome, the people knew they needed him in office, which helped him hold his consulship for so long. Marius was elected consul again each year until his sixth consulship in 100; the people disregarded the lex Annalis didn’t allow the senate to prolong his consulship (Scullard 1982 52). Marius saw an opportunity... ...r political status and power, to finally breakdown the Roman Republic. By Marius using war and corruption to his advantage to gain and hold on to his consulship for many years, he gave the impression that the senate was losing their power and hold over the people. By abolishing the Servian laws and allowing the landless and the poor to serve in the army, he threw out the Roman tradition that money and wealth showed loyalty and commitment to Rome. Also, he provided the generals, and himself, the pressure to continue to win the wars in order to gain loot, and land to give to their armies to keep them happy. However, mostly Marius military reform was the most influential ways that Marius had on the future Romans, that gave them the power to achieve their political success over the senate and eventually bring forth the breakdown of the Republic. Word count: 990 Essay -- Cassandra Casares 2-11-14 Paper #1 Marius paved the road that inspired many to follow in his footsteps, as Caesar and Octavian, which led to the breakdown of the Republic. Marius held consulship for a record breaking seven years, completely disregarding the Lex Annalis, and leaving the senate looking slightly powerless in the eyes of its people. Also, Marius used war and corruption on his side in order to hold his political power in Rome, knowing full well he was needed to fend off invasions especially from the north. By abolishing the Servian laws, he also allowed the landless and the poor to join in the army, which created status problems for the Romans, and encouraged others to follow right along with his creation of a professional, private army through the Marian Laws and reforms. Gaius Marius put into affect army reforms that changed the military, political and social aspects of Roman society. These reforms brought about private professional armies, enlarged aristocratic values by increasing wealth, and event ually led to the exploitation of legal and political faults to boost personal power that all together helped to disestablish the republic. One important aspect of Roman life is that of tradition. By Marius consecutively holding seven consulships in a row and doing so whilst not present for some strayed away from political tradition and enabling actions of later romans. Because of a foreign threat up north of Rome, the people knew they needed him in office, which helped him hold his consulship for so long. Marius was elected consul again each year until his sixth consulship in 100; the people disregarded the lex Annalis didn’t allow the senate to prolong his consulship (Scullard 1982 52). Marius saw an opportunity... ...r political status and power, to finally breakdown the Roman Republic. By Marius using war and corruption to his advantage to gain and hold on to his consulship for many years, he gave the impression that the senate was losing their power and hold over the people. By abolishing the Servian laws and allowing the landless and the poor to serve in the army, he threw out the Roman tradition that money and wealth showed loyalty and commitment to Rome. Also, he provided the generals, and himself, the pressure to continue to win the wars in order to gain loot, and land to give to their armies to keep them happy. However, mostly Marius military reform was the most influential ways that Marius had on the future Romans, that gave them the power to achieve their political success over the senate and eventually bring forth the breakdown of the Republic. Word count: 990

Kellogg Case Study Essay

Qualitative research establishes a conversation with consumers. It prompts consumer reaction to, for example, a new product idea and helps researchers understand what they think of it, how it makes them feel, why they find it interesting or not. Qualitative research may be obtained through focus groups, where a  moderator captures feedback from a group of six or seven  consumers to the ideas shown to them. Those ideas may take  the format of drawings or having new food prototypes to taste. Quantitative research may use questionnaires administered to large numbers of respondents. This allows statistical analysis, such as the calculation of a mean score or percentages. It aims to give a representative picture of what consumers think of a new product idea or a new (real) food. It may involve the use of scales, so numbers get associated with a particular meaning – for  example, on a evaluation scale of 1 to 7, where 1 means ‘very poor’ and 7 means ‘excel lent’. Crucially those numbers need to be interpreted to enable the business to understand the  consumer’s overall response. In addition, Kellogg’s used secondary research which is existing research that has already been collected by other organisations. Sources of secondary data include books, journals, the internet and government statistics. Market research agencies collect a range of data which they process and use to provide organisations like Kellogg’s with research. The benefits of secondary research are that it is quicker and often less expensive than primary, although it may not always be completely related to the needs of a specific project. Information gathering –  discovery to selection For Kellogg’s, the order in which the information is gathered is as important as the type of information being gathered. In order to develop the new Crunchy Nut Bites, Kellogg’s undertook four distinct stages of research. Stage 1: Discovery Initial research aimed to identify a set of new food ideas that would be  suitable for developing a new Crunchy Nut product. Secondary research from Mintel and Datamonitor was used to  find out about innovation trends in the cereal market. It was also used to find out about new products, flavours and foods from around the world. Food developers at Kellogg’s used this  information to come up with a number of new food ideas. Focus groups were used to provide qualitative research. These were used to show consumers the new food ideas in the form of a number of different (real) food prototypes, including a mini crispy lattice product and a nutty triangle. The focus groups captured the attitudes and feelings of consumers towards the new foods. This primary research helped Kellogg’s to find out how new product suggestions could be developed and still fit in with the Crunchy Nut brand. It helped Kellogg’s to establish what consumers were looking for in terms of potential new flavours and textures. The results allowed Kellogg’s to discard some ideas. Other ideas were appealing for consumers but needed refining and further development. At the end of this stage, Kellogg’s had a number of new food ideas that all seemed to appeal to consumers. Stage 2: Selecting the best idea This stage aimed to select the best idea arising from the stage 1 research. Kellogg’s put the ideas from the focus group on boards. The boards had pictures showing product ideas and a description of what the new product would be like. These boards were then shown to a large group of representative consumers in a  quantitative survey. They were asked to rate those ideas against a number of scales, so Kellogg’s could identify which product ideas consumers liked best or disliked. The quantitative data created specific statistical information that indicated that a new Crunchy Nut Bites idea was perceived as the most appealing amongst all the ideas tested. †¢ It established what proportion of people liked the new product idea enough to buy it. †¢ It also identified those product ideas that had the best or least sales potential. Information gathering –  development to launch Stage 3: Crafting the idea into a complete new product Once the best idea had been selected from stage 2, Kellogg’s needed to make this idea become a real product. The Crunchy Nut Bites food prototype recipe was refined using the feedback from another qualitative and quantitative survey. The qualitative research helped Kellogg’s food technologists to explore the taste and texture of the new food idea in more detail. Kellogg’s needed to understand the ‘eating experience’ of the consumer before a decision could be made about how to develop the recipe in more detail. Following this stage, four product recipes were developed and these prototypes were then tested with representative groups of consumers in a quantitative survey to  see which product consumers preferred. This enabled Kellogg’s to select the best one. Also, at this stage, the pack design for the new Crunchy Nut Bites was developed. Several designs were developed aimed at giving the new product the same look and feel as the rest of the Crunchy Nut family. The packaging designs were tested with  consumers, which enabled Kellogg’s to select the final packaging design for Crunchy Nut Bites Stage 4: Forecasting sales for the new Crunchy Nut Bites At Kellogg’s, every product has to undergo one final test prior to a new product launch. This is called the ‘In Home Usage Test’. The consumers are given the product to try for several days and this enables Kellogg’s to capture how consumers interact with the product for the first time. At the end of the trial, consumers complete a report on what they thought of the food in the form of a questionnaire. This final survey measures how appealing the new product is to consumers and how likely they would be to buy it in real life. The data collected also helped to calculate a sales forecast for the new product for the first and second year in market. The forecast was used by the finance department to set budgets, organise the supply chain and to schedule food production. Once the data  was analysed and the product concept tested, Kellogg’s was able to make the strategic decision to go ahead with the new product. Production could then take place. Conclusion Kellogg’s used market research throughout the whole development process for a new product for the Crunchy Nut range, from the initial idea to the planning of production and delivery. During the earlier stages of research, consumer responses helped Kellogg’s to explore lots of different ideas in an open way. It then crafted some ideas in more detail and screened those ideas with consumers to select the one which seemed to have the highest appeal. The idea became real by testing several recipes, refining the food prototype selected and developing the design for packaging. Once the food and packaging elements for the new product had been developed, the whole product was tested with consumers to ensure it met their needs. The data also provided a sales forecast to predict the first two years of sales of Crunchy Nut Bites. Crunchy Nut Bites has extended the Crunchy Nut family of products. In doing so it has brought new consumers to the brand and  increased its consumption. Kellogg’s launched Crunchy Nut Bites in September 2008. Sales data shows it was one of the best  performing brands to launch in the breakfast cereal category with a sales value of  £6.9 million in its first full year of sales.* This illustrates that the detailed market research undertaken during the planning stages was valuable. It helped to ensure that the product extension hit the spot with consumers straight away.

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