Deployment of Firewall and Intrusion Detection and Prevention Systems

The combination of hardware and software that selectively allows communication between a computer and a network is known as a firewall (Fithen, Allen Stoner, 1999). It inspects the traffic during a network communication and blocks or permits passage depending on a given set of rules. The term Intrusion Detection and Prevention Systems (IDPS) refers to both Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS).Advertising We will write a custom essay sample on Deployment of Firewall and Intrusion Detection and Prevention Systems specifically for you for only $16.05 $11/page Learn More Intrusion Detection is a process of monitoring the activities occurring in a computer network and determining if they are in violation of standard security policies. The software that automatically carries out the process is known as IDS. IPS is able to carry out the intrusion detection process and can try to stop the intrusion/violation (Scarfone Mell, 2007). Various firewall arrangements can be used for multitier applications accessible from the World Wide Web and from an internal network. Multitier web applications of moderate complexity are segmented into three tiers. The first tier is made up of the presentation components that are accessible directly by end users. The second tier is composed of middleware components that execute the end users’ requests. End users cannot access them directly. The third tier consists of data components. They are the most sensitive and are hosted by databases or directory servers. Firewall deployment is based on three strategies. The first strategy is the single firewall strategy, which is used to protect all the three tiers from the internet and internal network. All the communication going in and out of the three tiers goes through a single firewall. The firewall offers equal protection to all the servers but can subdivide the network into different subnets and offer different protectio n level to the subnets. Firewall in series strategy is whereby several firewalls are deployed to eliminate reliance on a single firewall. The firewalls are deployed one behind another and therefore the more sensitive tiers are behind more firewalls. For example, the data components tier would be behind both the firewall protecting it and the one protecting the middleware components and presentation components. The last strategy is the hybrid strategy, which uses only two firewalls. Either presentation servers and middleware servers or data servers and middleware servers are grouped together. Although two tiers are grouped together, they remain under dedicated subnets. In the first grouping, presentation servers and middleware servers are behind one firewall while data servers are behind two firewalls. All firewall arrangements are on the internal side of a router.Advertising Looking for essay on it? Let's see if we can help you! Get your first paper with 15% OFF Learn Mo re IPS is always deployed inlinewhile IDS can be deployed inline or out-of-band. When connected out-of-band, it uses a hub, a spanning port or a network tap. Deploying both ISP and IDS is more beneficial and to do this, a router must be introduced. The IPS is connected on the external side of the router and the IDS is connected in internal side of the router either inline or out-of-band (Pappas, 2008). The IDS placed on the inside section of the edge router allows analyzing of communication within the internal network. The use of firewalls and IDPS is beneficial. Firewalls block network traffic that may be violating the security policy of an organization. Such traffic may include viruses, spam, email bombs and unwanted material. IDPS detect and stop malicious incidents that would compromise security of a given computer system. They can detect when an attacker has compromised the system and stop suspicious file transfers. By identifying reconnaissance activities, they can prevent e minent future attacks. Reference List Fithen, W.L., Allen, J.H. Stoner, E., (2008). Deploying firewalls. Software Engineering Institute. Web. Pappas, N. (2008). Network IDS and IPS deployment strategies. SANS institute. Web. Scarfone, K., Mell, P. (2007). Guide to intrusion detection and prevention systems(IDPS). Computer security resource center. Web. This essay on Deployment of Firewall and Intrusion Detection and Prevention Systems was written and submitted by user Mia Butler to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

Standard Cost and Variance Analysis Essays - Management Accounting

Standard Cost and Variance Analysis Essays - Management Accounting University of Phoenix Material Standard Cost and Variance Analysis Complete this matrix by providing at least 2 reasons why you agree and 2 reasons why you disagree with each of the following authors statements (shown on page 17 of the article). Support your arguments with at least 125 words for each agreement/disagreement. Authors CommentI agree becauseI agree because In the future, I envision more companies moving toward actual cost systems. Standard cost variance analysis will no longer be required because inventory transactions will be recorded at actual cost.Standard cost variance is the difference between the actual cost and the standard cost of a product or service. Managers and their accountants identify and analyze variances on a regular basis. This process is called variance analysis, and variances often signal problems that may require investigation and possible action. With that understanding in mind, my agreement with the authors comments is solely based on the fact that the actual cost accounting method clearly outlines the expenditures needed to acquire an asset, which includes the supplier expenses, plus the costs to deliver, set up, and test the asset. Understanding all of the definite expenses needed to run a department or purchase new assest allows a company to eliminate all potential cost variances, because they are working off of real data and not estiamations; therefore they are able to make well informed decisions of actual data, and not speculation. I agree that some companies will move toward actual cost systems instead of using a standard cost variance analysis. The companies that I would expect to do this would be those who have costs that change frequently, such as a company manufacturing custom products and companies dealing with volatile raw material pricing. These types of companies will be dealing with mostly short term costs that can unexpectedly and frequently increase or decrease in size. The cost of their materials, overhead, and even labor are constantly changing as they are not producing the same thing over and over. If costs remained the same throughout the manufacturing process it would probably be better to use standard costing instead as there is usually not much change and conducting a standard cost variance analysis will show the cause of the variance in cost. This change will free up significant resources in the finance department and will allow cost analysts to function more as business partners within the organization. The accounting focus will shift from variance analysis to understanding the underlying cost structure of a product or process, highlighting significant cost trends, identifying cost reduction opportunities and educating operations personnel on the financial impact of their day-to-day decisions.Agreeance with this statement is based solely on the fact that the variance analysis determines what the company is saving within the process of operations on a day to day basis. The decision made to reduce cost in any form will be solely because of this variance. The variance can be either positive or negative in any given case and therefore the cost trends in which are revealed will have to be taken into consideration as well. Management can then take a look at the cost reduction opportunities and make an informed decision on which direction the company wants to go in. If it would be more profitable for them to decrease cost in the areas of production, labor or even materials. Educating opera tions personnel on the financial impact of the day-to-day decisions will in my opinion save the company time and money. It is understandable that the numbers not only have to add up but they have to be sound and make sense to do from a business stand point. Understanding why some financial aspects of day-to-day business cannot happen will make the operations personnel more attentive to the product and the cost associated with it. Operations personnel upon being educated about how their decisions impact the finances of the business will then be able to determine an appropriate amount of product to have on hand at any given time so that there is no excessive unused portion of product. The operations personnel can also make the necessary adjustments to the cost of completing the product as well as the process that it takes to complete the product. The analysts role will become proactive

Executive Interview Assignment Example | Topics and Well Written Essays - 1500 words

Executive Interview - Assignment Example In other words, the person has a certain ideal that is used to measure the correctness of each action. Another point that should be mentioned is that the subject draws a direct connection between the notions of ought and can (Doviak, 2011, p. 262). As a result, the ethical rules are not something that exists in the abstract environment, but something that should be applied to everyday interactions with the people. This is particularly important since it shows that the person in question actually engages ethical consideration in the everyday practice. That is why his behavior should be praised as it as directly effected by the ideals and is performed is close relation to the ethical framework that the person has developed. By far, this is a big difference if compared to the majority of the people who do not engage Ethics in the daily life. One would make no mistake suggesting that person has experienced some problem in the course of professional activity. It was noted that one of the biggest ones was to save the integrity and make sure that the ethical standards are not compromised (Constantin, 2014, p. 432). This is rather important since it shows that a person truly wants to live to his expectations and make sure that his image in the workplace serves as a role model for other people. It is quite obvious that the question of integrity is significant for the people who are in the military since it is one of the values that is being highly praised in their environment. That is why keeping it was named among the major challenges in the work place. Another challenge which was mentioned focused on making sure that people who are not able to conduct according to the high ethical standards do not get away with it. One might suggest that this not only goes contrary to the notion of justice, but also undermines the ground on which the military stands. Thus, the latter greatly relies on the