Wednesday, December 25, 2019

Bvs Supply Chain Management Case - 983 Words

Nicolas Maalouf ID: 120265 International operation and supply chain management ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · ï‚ · Strengths: ï‚ · - BVS has assured its relative independence from its corporate ï‚ · parent in the US - number 2 in its field. ï‚ · - The hiring effort focused on scientists, and junior ï‚ · management. - Aggressive investment in Research; Strong and innovative ï‚ · RD Department. ï‚ · - Intensive growth in current sales and projected sales ï‚ · - Dynamic, entrepreneurial, and ambitious head of purchasing department and have an international experience. ï‚ · - High-tech machinery, BVS most advanced on the market.ï‚ · - BVS sustain good relations with their supplier. ï‚ · ï‚ · Opportunities: ï‚ · - Forceful investments in the pharmaceutical industry, ï‚ ·Ã¢â‚¬ ¦show more content†¦- The market was dominated by a handful of companies. The outer surroundings - the situation outside BVS Risks and Opportunities The case enlightens a main problem directly related to the process of manufacturing of new critical product; some delays in RD schedule due to the difficulties of supplying some key ingredients. That cut in supply chain can generate an immense disorder in expected figures; indeed the interruption can enlarge the valley between BVS and competitors especially Marbelpharm. In addition, serious risk can be in attendance if Wildgras may not satisfy BVS demand in the coming years or if the market can’t supply chemical materials necessary for production. In other hand, independency of BVS division is menaced and the Mother Corporation can take control of its management in order to adjust traditional management and deal with the situation in an American approach to hold back and resolve departments’ confrontation and accelerate the chain enrolment. If the new strategy helps for building-up the company, i n that case BVS can catch the booming market and the new cooperation with â€Å"WildGrass NJ† will generate a new era of prosperity and BIOLOGICAL VACCINE SCIENCE – BVS Michel Philippart 2012 International operation and supply chain management MIB 32 may work together on two new vaccines that improve BVS sales using young managers and researchers that can drive innovations safely from suppliers toShow MoreRelatedQuestions On Oil And Gas Management3223 Words   |  13 Pages DUNDEE SCHOOL OF BUSINESS DIVISON OF BUSINESS AND MANAGEMENT MSc. OIL AND GAS MANAGEMENT Student Name: HENRY ETHEKON YANAE Student Number: 1307728 Module Code: MT1135A Module Title: OIL AND GAS MANAGEMENT INDUSTRY Module Tutor’s Name: AVRAMENKO, ALEX DR. Title: AN ANALYSIS OF THE STRATEGIC DECISION MAKING ADOPTED BY EXAMINING FACTORS IN THE INTERNATIONAL ENVIRONMENT FOR TULLOW OIL PLC. TABLE OF CONTENTS 1. Introduction †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 3 2. CompanyRead MoreTrends In Automotive Industry Implication On Supply Chain Management2234 Words   |  9 PagesWhite Paper Trends in the Automotive Industry Implications on Supply Chain Management Author Michael Schwarz February 2008 Cisco Internet Business Solutions Group (IBSG) Cisco IBSG Copyright  © 2008 Cisco Systems, Inc. All rights reserved. White Paper Trends in the Automotive Industry Implications on Supply Chain Management Recent emphasis on global climate change is increasing pressure on automotive executives to make the right decisions in many areas, including RD and manufacturingRead MoreThe Role of Transport within the Supply Chain Essay1964 Words   |  8 PagesWhat is the role of Transport within the Supply Chain? 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It is the beginning of 2011, and Ingvar kamprad, founder of the Swedish furniture retailing giant IkEA, is concerned his firm may be growing too quickly. he used to be in favour of rapid expansion, but he has now started to worry that the firm may be forced to close stores in the event of a sustained economic downturn. on the other hand, IkEA is active in nearly all the worlds con- tinents, though to a lesserRead MoreWhirlpool Europe3955 Words   |  16 PagesWhirlpool International BV (WIBV). 1990: Added the whirlpool brand name to the Philips product line. 1991: whirlpool bought the rest of the Philips stake (47%) for $ 600 million to become the sole owner of Whirlpool International BV. 1991-1999: WIBV developed three pan European brands to differentiate its product line. Whirlpool, Bauknect, and Ignis. Regional brands like Laden which was sold exclusively in France were also created. MARKET SHARE Ââ€" 13%. 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Today, Kraft Food products include beveragesRead MoreInventory and Ikea25808 Words   |  104 PagesLund 2009-11-05 Department of Industrial Management Logistics Production Management Coordinated inventory control - A case study on its performance compared to the current system at IKEA Master’s Thesis project 1002 Silvia Rasmusson and Bjà ¶rn Sunesson Acknowledgement This master’s thesis is written as a final part of the Master of Science program in Industrial Engineering and Management at Lund University, Lund Institute of Technology. The project corresponds to 30 ECT credits andRead MoreBusiness analysis of J Sainsbury and Morrisons3726 Words   |  15 PagesMary Ann in London and today operates a total of 872 stores which comprises 537 supermarkets and 335 convenience stores. It grew to become the largest grocery retailer in 1922 and pioneered self-service retailing in the UK. It is the third largest chain of supermarkets in the UK after Tesco in first place and Asda which is the second largest supermarket since 2003. It jointly owns Sainsbury’s Bank with Lloyds Banking Group and has two property joint ventures with Land Securities Group PLC and TheRead MoreHow E Commerce Has Changed Business Practices2162 Words   |  9 Pagesashxei=JvlIVMT-OcTYmAXDu4GYBAusg=AFQjCNFO5BKS4IDamXvUtcsldUY8BSmT6gbvm=bv.77880786,d. dGY Allen, E., Fjermestad J. (2001). Ecommerce marketing strategies: an integrated framework and case analysis. Logistics Information Management, 14, 14 – 23. http://dx.doi.org/10.1108/09576050110360106 Punakivi, M., Saranen J. (2001). Identifying the success factors in egrocery home delivery. International Journal of Retail Distribution Management, 29, 156 – 163. http://dx.doi.org/10.1108/09590550110387953 Hays

Monday, December 16, 2019

The Media s Impact On Self Image - 762 Words

Watching â€Å"Dying to be Thin† further solidified a slowly growing understanding of the media’s impact on self-image and its ability to steal a person’s life in a 30-second advertisement. As explained in the video, eating disorders have the highest death rate of any psychiatric illness. The onset of this illness seems to stem from a desire to achieve the unattainable and the subsequent desperation that ensues. â€Å"Dying to be Thin† properly explained the role of the media in saturating society with waiflike images that we are to perceive as perfect and worthy of love and adoration. This gives evidence to the idea that members of society have unfortunately become conditioned to feel that if they were not precisely the visual image of what is consistently thought of as desirable, they were then not good enough. On top of the role of ‘seed planter’ the media is also able to take credit for the creation of the mindset that, these body ima ges, although 20% below normal body weight, can be completely attainable by the average person- if they just tried hard enough. Setting unrealistic physical goals tended to motivate individuals to seek unconventional means for physical success. So, with that mindset, extremes such as the binging and purging or starvation of the ballerinas in the video only seemed logical. Physical success for those young women did not just mean visual benefits; it would mean job opportunities. Along with the extreme negative factors being chased, a feelingShow MoreRelatedThe Impact Of Media On Women s Perceptions Of Image, Gender Roles, And Overall Self Worth Essay1352 Words   |  6 PagesMedia plays a huge role in people’s perceptions of image, gender roles, and overall self worth. The media is constantly reinforcing limiting stereotypes through television, advertisements, films, and more. These stereotypes are especially geared towards women, suggesting that they have to look and act in an overtly feminine manner in order to be accepted by society. Though there are stereotypical qualities of men illustrated in media as well, they are mostly suggesting that men are dominant andRead MoreTodays Unrealistic Body Expectations1311 Words   |  5 Pagesby our own societys portrayals of good looking men and women that they feel pressured into doing whatever it takes and going through extreme measures, most of the time, spending countless hours in the gym trying to achieve that perfect body. Body image is evident in the gym, as the men are lifting weights they are frequently looking in the mirror examining every angle of their body making sure no area is lacking muscle. On the other hand, women tend to partake in the same behavior as men, showingRead MoreMedia and Unrealistic Body Image Essay1053 Words   |  5 Pagesposition where they are constantly flooded with idealistic images that depict what the media perceives as the â€Å"perfect body.† Quite often, you ng university-attending females, those who are involved in social identity formation, are exposed to numerous forms of media that fabricate various experiences relative to body image. In the past, researchers have surveyed women who are exposed to body-related standards using multiple forms of mass media as a unified entity, which has caused for limitations sinceRead MoreThe Influences Of Mass Media On Society864 Words   |  4 PagesThe Influences of Mass Media on Society For the greater majority of the American society, the presence of mass media is a normal part of everyday lives. With the purpose of mass media being to educate, entertain and inform, the excessive violence, self imaging, and lack of full detail on world events, is having negative influences and unhealthy impacts on society. As early as the 1920s, a form of the media has been present in the American society. Although broadcasted content wasRead MoreThe Advertising Of Diet Plans And Supplements Essay1702 Words   |  7 PagesToday s society is constantly presented with misrepresentations of the ideal body image through the advertising of diet plans and supplements. Companies in the fitness industry scam people into buying useless products or services by advertising with individuals that have, what the mass media sees as, the perfect body composition. In addition to getting consumers to buy into a product or service, these companies also aid society with the spreading of this fake idea of what classifies as theRead MoreMedia s Effect On Women s Self Esteem Issues922 Words   |  4 Pagesbuy it. It distorts woman s perception of beauty, and impacts women not only negatively in their self-image, but their health too. They make women believe that they will only reach perfection if they buy their products. I believe that media may contribute significantly in self-esteem issues. Banning beauty advertisements would decrease significantly the percentage of anorexic and bulimic women. Media is creating a false image of how real women supposed to look. Media affects woman physicallyRead MoreThe Self Image Of Young Adults1396 Words   |  6 PagesFor many, many decades Americans have suffered from self-image because of inner conflicts causing very low self-esteem issues. Many of these conflicting identity issues play into these severe inflictions with one s self. Teens and young adults have a troubled existence of feeling incompetent, unloved, unworthy and leaving them unable to fit into the crowd because of their body image leaving an imprint of a certain way to look. As Early as age five, children have been brainwashed with secular televisionRead MoreHow Does Self Discrepancy Of Media Influenced Body Image Affect Adolescents Self Esteem?1235 Words   |  5 PagesSection A: Project Details Title: How does self-discrepancy of media-influenced body image affect adolescents’ self-esteem? Abstract: Research has shown that exposure to thin-ideal media is related to body dissatisfaction. Consequently, the accumulated dissatisfying emotions regarding one’s body can evolve into distorted body perception. Such disturbed body image has been evident as associated with low self-esteem. Nonetheless, little research has sought to elucidate the rationales for these perplexedRead MoreSocial And Social Impact On Social Media1167 Words   |  5 PagesThis study suggests that social comparison orientation (SCO) produces negative outcomes is associated with social media use. They believe that people high in SCO are very aware of people around them and thus are more drawn to social media because the expansive networks allow individuals to connect to a wide variety of others, and we can learn a large amount about these people from their profiles. Also, social networking sites allow for upward social comparison, or the comparison of yourself withRead MoreThe Effects Of Social Me dia On Body Image1663 Words   |  7 PagesCountless scientific studies and research focus on the effects of social media platforms on body image, social comparison, and image satisfaction. Author Erin A. Vogel has written extensively over the effects of social media and body image. The studies utilize different experimental approaches that indicate the subjects who showed high levels of social comparison orientation are avid users of Facebook (Vogel, 2015), the social media platform of focus of the article. There is a correlation between specific

Sunday, December 8, 2019

Power and Interdependence in Organizations †MyAssignmenthelp.com

Question: Discuss about the Power and Interdependence in Organizations. Answer: Introduction: Sam was thinking the whole day about his new assignment in his dream company Coptic Inc. Sam had already equipped himself with a lot of information about the company where they used different kinds of power to stimulate leadership among the employees. Also, the organization leadership exercised power with complete autonomy where the leaders would command the employees in any activity so as to achieve results. Sam knew that there were many organizations which were known for their misuse of power that led to such organizations losing customers due to bad reputation. There were myriad of questions that Sam asked himself while at Coptic Inc. among the questions, two of them came out very strongly. Is the power that is used in organizations, provide people with guidelines so as to achieve the required results? Another question was, is the systematic use of authority and power consequential when the capabilities and talents of the employees are known? On the first day of Sams orientation, he was introduced to senior officials in the company, his teammates and also taken through the future of the company. As his first assignment, their team was allocated a challenging task. Sam was happy because their team leader was very profound with adequate knowledge and skills on the task at hand. After some weeks Sam acclimatized himself into the new environment and came to understand about power very well. Despite the fact that Sam provided quality work, he was not in a position to comprehend the reason why his senior was not impressed by his work. The quality expectation of his senior was far much high. His senior reiterated that his presentations were not up to the standards. For this reason, Sam had a hard time to be able to confront his senior anymore since he was afraid to be demotivated by being told that his work was bogus. As pointed out by Beycioglu, (2014), it needs to be understood that power is very momentous and it is an opportunity that leaders of an organization can use to connect with employees. Moreover, an open type of leadership should be used to know what problems the employees are going through. In his experience at Coptic Inc. Sam came to realize that power in an organization can exist as a result of the structure of an organization. The structure of an organization implies the hierarchy of those people who are in power (Tannenbaum, Weschler and Massarik, 2013). Case in point, when the hierarchy of an organization is long, then it means that such an organization is likely to impose an authoritarian type of leadership. Sam realized that it is power that influences and reflects the kind of behavior and beliefs that the employees have. For instance, if his senior would have explained to Sam where his problem was in his presentation, then Sam would have the ability to correct and make a bette r presentation. There are different types of relationship that exists in an organization, they include, manager to employee, employee to employee and manager to manager (Burtis and Turman, 2010). Manager to employee relationship, use of power is extremely significant since it has an effect on the performance of the employees (Monarth, 2013). In this type of relationship, the work output is greatly determined. When there is articulate and less commanding information, employees will be in position to understand and follow to the latter. When Sam saw it is important that he discusses the issue with his coworkers on how to make his work better, he was able to understand the different kinds of power that exist in his new workplace. The forms of power that Sam came into knowledge of include; Power equals influence. When an individual is in a position of authority, especially in an organization power is lend to such a person. However, borrowed power is not effective as one that is brought forth when one is in a position of leadership. Power in an organization is separated into two forms, personal power, and social power. The basis of use of power in an organization to ensure that employees and resources are mobilized so as to achieve organizational goals and targets (Griffin, 2017). Power in an organization depends on the structure of an organization in which in different positions, roles and responsibilities accompanies each position. Reward power in organization defines a manager's ability to recognize work done by the subordinates through recognition such as pay rise or promotions. This kinds of recognition are usually verbal reward or monetary rewards. According to Knippenberg, (2005), the source of personal power in an organization is expert power. This is based on t he skills and knowledge of a manager regarding handling a particular task. Through the prowess depicted by a manager by showing off one managerial skill, a manager can be recognized by the subordinates and able to attain the status of admiration. The last kind of power is the coercive power, this type of power is used by a manager to administer punishment to the team members and the subordinates upon making a mistake (Carroll, 2015). There are many forms of punishments that one can exercise with the use of coercive power. Case in point, a manager, can draft a warning letter, pay cuts or suspensions. Consequently, coercive power can be used when an employee actions are not in tandem with the companys policies or are not tolerable by any person. Using coercive power is a way of showing that actions which do not depict the peaceful existence in an organization are not condoned (House, 2004). After having fruitful discussions with his co-workers, who were also part of his team on ways he can improve his work, he was able to come to the realization on why the seniors behaved the way they did in the company. For a long time, Sam had a lot in mind on why his performance was below the bar for a long time besides ensuring that he presented his work long before the stipulated deadline. Sams work was always returned for corrections after which were later passed. However, Sam was always reminded by his senior that he had the potential of performing better. Due to his friendly nature, Sam made a lot of friends in different departments. Due to his profound relationship with other people, Sam was able to hear stories about power regarding various leaders. Sam learned that those who were in charge of team members had total control of the team. They depicted a sense of superiority because they had a sharp knowledge and competed for skills on various tasks thus being the head to teams. Those in charge of teams were the numero-unos, and their word was final and beyond dispute. What still baffled Sam was the source of power the people in the story had. Sam believed that team leader who exercised that kind of power must have received a go ahead from a certain source that Sam wanted to enquire. For this reason, he decided to meet the team leaders to have a better understanding of the power being practiced. Coptic Inc. is a company that is known for its pool of talents from people across nations to come work for it. For this reason, Coptic Inc. has people who work with a lot of confidence and depict people who are committed to the various assignments. In his quest for a type of power at Coptic Inc. Sam was able to note that power is represented as the ability to exercise communication in a conscious and subconscious state. Sam was able to be provided with the information of how power is manifested and perceived in latent, manifest and invisible power (Tjosvold, 2009). Manifest power is the power that is seen among those who exercise power by letting people know what they are capable of. Case in point manifest power is visible when a manager comes up with strategies, and other attempts to conflict with management. Latent power is a power which can not only be seen but also felt. For instance when someone is granted a wish by a manager, it is a form of latent power. Invisible type of powe r is the type of power that cannot be seen but can only be felt. This type of power is executed with a lot of awareness, and proper judgment is applied at every instance a decision is made. With this discussion, Sam was aware of the type of action that a manager can take and the type of power that runs through his team. Sam was able to realize that there are no set standards that are practiced by any of the managers but it depends on the personality of the individual who is practicing the power. In addition, power is practiced according to the situation and condition of tasks that is, at hand and also the type of environment that a leader would like to create for a team. Sams group was dynamic in nature due to the different kind of diversities that was depicted by the team members. The leader was responsible for directing the team members of the goals that were to be attained for the completion of a task. Power is intertwined with organizational behavior and is majorly practiced through manager-employee relationship (Holland, Cooper, and Hecker, 2015). Being new in the organization Sam was in the race of showing his capability by giving his work promptly. Sam was not aware that he was practicing latent power whereas his senior was practicing expert power. This means that Sams senior wanted work which depicted quality and competence regarding the work that is assigned. Latent power is usually practiced by people who are working with managers who are experts in the certain field (Odeku, and Animashaun, 2012). Sam could not be able to confront the manager why hi work was rejected because he had a fear of losing the task and eventually his job. As much as Sam was aware that he was working with an expert in the field, he feared being told of his incompetence since his senior credentials surpassed his. Also, Sam was unable to inquire why despite his hard work he could not achieve the requir ed recognition on the assignments that he handled. His use of latent power deters him from having the testicular fortitude to go and inquire even from his colleagues on why his work was being rejected at every instance or why he got reworks in his works. Oyler and Mildred, (2009) suggests that power is the sole tool that managers have that separate them from the other employees. Managers use power to ensure that they point the resources of an organization to a particular direction. Organizations consist of different people with different personalities. This means that managers are required to understand that different employees have different attitudes and personality and they all require a different kind of power so as to be managed. It should be noted that power is divided into social and personal power which are further divided into legitimate, reward, and coercive powers (Buckham, 2013). Managers use the above powers in different ways and different instances so as to achieve different objectives (Chang, 2012). Legitimate power depends on the hierarchical structure of an organization where each person has a person to answer. Reward power is where the manager has the capability of being able to reward the employees good work through incentives such as pay rise and promotions. Coercive power is used by the managers to rate the behaviors that are not tolerable to the company policies. Manager uses coercive power to administer punishments to employees who have gone against the rules. It is imperative to understand that power is very important in shaping the conduct of the employees. References Beycioglu, K. (2014).Multidimensional perspectives on principal leadership effectiveness. 1st ed. IGI Global. Buckham, R. H. (2013). Appreciating the narrative basis of workplace hope experience.Journal of Organisation and Human Behaviour,2(1), 7-13. Retrieved from https://search.proquest.com/docview/1478026796?accountid=45049 Burtis, J. and Turman, P. (2010).Leadership communication as citizenship. 16th ed. Thousand Oaks, Calif.: Sage, p.166. Carroll, C. (2015).The Handbook of Communication and Corporate Reputation. 1st ed. Somerset: Wiley, p.311. Chang, C. (2012).Professional counseling excellence through leadership and advocacy. 1st ed. New York [u.a.]: Routledge. Griffin, R. (2017).Organized Behavior in Action: Cases and Exercises. 8th ed. Cengage Learning, p.125. Holland, P. J., Cooper, B., Hecker, R. (2015). Electronic monitoring and surveillance in the workplace.Personnel Review,44(1), 161-175. Retrieved from https://search.proquest.com/docview/1655513180?accountid=45049 House, R. (2004).Culture, leadership, and organizations. 1st ed. Thousand Oaks, Calif.: Sage Publications. Knippenberg, D. (2005).Leadership and power. 1st ed. London: Sage Publ. Monarth, H. (2013).Breakthrough communication: a powerful 4-step process for overcoming resistance and getting results. 1st ed. McGraw Hill Professional, p.12. Odeku, K., Animashaun, S. (2012). Ensuring equality at the workplace by strengthening the law on prohibition against discrimination.African Journal of Business Management,6(12), 4689-4699. doi:https://dx.doi.org/10.5897/AJBM11.2662 Oyler, J. D., Mildred, G. P. (2009). Workplace diversity in the united states: The perspective of peter drucker.Journal of Management History,15(4), 420-451. doi:https://dx.doi.org/10.1108/17511340910987338 Tannenbaum, R., Weschler, I. and Massarik, F. (2013).Leadership and Organization. 1st ed. Routledge, p.26. Tjosvold, D. (2009).Power and interdependence in organizations. 1st ed. Cambridge: Cambridge University Press.

Sunday, December 1, 2019

Intrusion Detection Systems Essay Example

Intrusion Detection Systems Paper Intrusion Detection Systems In 1980, James Anderson’s paper, Computer Security Threat Monitoring and Surveillance, bore the notion of intrusion detection. Through government funding and serious corporate interest allowed for intrusion detection systems(IDS) to develope into their current state. So what exactly is IDS? An IDS is used to detect malicious network traffic and computer usage through attack signatures. The IDS watches for attacks not only from incoming internet traffic but also for attacks that originate in the system. When a potential attack is detected the IDS logs the information and sends an alert to the console. How the alert is detected and handled at is dependent on the type of IDS in place. Through this paper we will discuss the different types of IDS and how they detect and handle the alerts, the difference between a passive and a reactive system and some general IDS intrusion invasion techniques. First lets go over what the difference is between a passive and a reactive IDS. In a passive IDS the sensor of detects an potential threat then logs the information and sends an alert to the console. With a reactive IDS, also known as an intrusion prevention system(IPS), the threat would be detected and logged. We will write a custom essay sample on Intrusion Detection Systems specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Intrusion Detection Systems specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Intrusion Detection Systems specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Then the reactive IDS would either reset the connection or reprogram the firewall to block network traffic from the suspected source, which could be automatic or at the control of an operator. Therefore a reactive system will act in response to the threat were as a passive system will only log and send an alert to the console informing the operator of a threat. There are many types of intrusion detection systems, network intrusion detection, host based, protocol based, application protocol based, anomaly based and hybrid. The first one we are going to discus is network intrusion detection systems or NIDS. With NIDS the system attempts to detect threats and attacks, such as denial of service attacks, port scans and attempts to hack into computers by monitoring the network traffic in real time through a promiscuous connection. It does so by first filtering out all known non-malicious traffic and then analyzing the remaining incoming packets for suspicious patterns that could be threats. It is not however limited to just analyzing incoming packets, the system also analyzes the outgoing local traffic, in case of an attack/threat that originates inside of the local network. Snort is an example of this. Host based intrusion detection systems unlike network intrusion detection systems, which focus on a computing system’s external interfaces, host based systems focus on the monitoring and examination of the computing system’s internals. Host based systems are more concerned with the changes in state of a computing system. It detects these changes by analyzing system specific logs either in real time or periodically. When there is any change in the logs the IDS will compare the current configuration of the security policy to the changes and react accordingly. An example of this would be tripwire. Protocol based intrusion detection systems (PIDS) monitor the dynamic behavior and state of the protocol. In a typical setup there is a system or agent sitting at the front end of the server. This agent or system monitors the communication protocol between the computing system, it is trying to protect, and a connected device. The main goal of protocol based IDS is to impose the proper use of the protocol used between the protected computing system and all connected devices. Bro and sort are examples of protocol based intrusion detection systems. Application protocol based intrusion detection systems (APIDS) are used to monitor the protocols specific to certain applications and protocols being used by the computing system. The typical setup, similar to protocol based IDS, consists of a system or agent that sits in front of a group of servers where it will monitor and analyze the communication protocols specific to applications. An example would be to have an APIDS between a web server and a database system where the APIDS monitors the SQL protocol being used between them. Anomaly based intrusion detection systems detect attacks and threats through the monitoring of system activity and classifying it based on heuristic or rules instead of patterns and signatures. The IDS classifies activity as either normal or anomalous based on its analysis. Since the classification is determined by heuristic or rules it has a significant advantage over systems that use signatures. In signature based detection the signature has to have been previously created where in anomaly based any type of use that doesn’t coincide with the normal use of the system will be detected malicious or not. Snort is an example of this type of system. Hybrid intrusion detection systems consist of a combination of one or more approaches to intrusion detection systems. Typically you would use a host based IDS and a network IDS to develop an extensive overview of the entire network. The biggest benefit that a hybrid IDS has over any single type of IDS is the large amount of sensors it has to detect malicious activity. Prelude is an example of an hybrid IDS. As with any other type of security device there will always be some one looking for holes in the fence. Intrusion detection systems are no different. Through many intrusion invasion techniques people are able to avoid detection by changing the states of the IDS and the targeted computing system by manipulating the attack or the network traffic that contains the attack. Some of the techniques we will cover in this paper are obfuscating attack payload fragmentation and small packets, overlapping fragments, protocol violations, inserting traffic at the IDS, denial of service. Obfuscating attack payload is simply what it means, which is to encode the attack so that the IDS will be unable to reverse the packets but the target computer can. A way to do this is through encoding attack packets with a Unicode character in which an IDS recognize but an IIS server will be able decode thus being attacked. You can also use polymorphic code in so that you can trick signature-based IDSs by creating unique attack patterns so there is not a distinct attack signature that can be easily detected. Another technique used to evade IDS is through fragmentation and small packets. With this technique you simply just split the packets up into smaller packets or create packets with a small payload also known as ‘session splicing’. Although small packets alone, will not be enough to evade an IDS with a packet reassembler. Hope is not lost though you can still modify the packets to complicate reassembly. One way to confuse the reassembler is to pause between sending parts of the attack in hope that the reassembler will time out but not the target computer. Another way is to send the packets out of order so that the reasssembler gets confused but the target computer does not. An IDS evasion technique, known as overlapping fragments, uses TCP sequence numbers to confuse the IDS. It basically creates a series of packets with TCP sequence numbers configured to overlap. So for example you send the first packet that includes 80 bytes you then send the second packet with a sequence number of 76 bytes after the start of the first packet. The target computer, when it tries to reassemble the TCP stream, has to decide how to handle the 4 bytes that overlapping. Some systems take it from the older data and some from the newer data, it is dependent on the operating system of the target computer. Protocol violations are another technique of IDS intrusion invasion. Using protocol violations you simply exploit known violations to a protocol that will be interpreted differently by the IDS than by the target computer. An example of this would be to use the TCP Urgent Pointer that is handled differently by different operating systems and the IDS may not handle it correctly. Another evasion technique is inserting traffic at the IDS. This is where you send packets that the IDS will see but the target computer will not. This is accomplished by simply crafting packets whose time to live fields have been configured to reach the IDS but not the target computer. This creates a situation where the IDS is in a different state than the target computer. Denial of service attacks or DoS attacks, are used to evade detection by overloading and disabling the IDS. To achieve this the attack will exploit a known bug in the IDS using up computational resources needed by the IDS. This can also be accomplished by intentional generating a large number of alerts to set up a front to hide the real attack. Utilities such as stick and snot are designed to send a large amount of attack signatures across a network to spawn a large number of IDS alerts. However this will only work on IDSs that do not maintain application protocol context. As you can see with the numerous ways around intrusion detection systems, as with any network security system, there is no complete security solution. Even with this there will always be a need for intrusion detection systems. The best of which would be a combination of network and host based IDSs, in other words a hybrid IDS. These will give you the benefits of both worlds of IDS and allow for greater security. Whatever your opinion on which solution is right for you, intrusion detection systems are here to stay and are a valuable tool in network security. Resources http://www. securityfocus. com/infocus/1514