...they will not auto-run content from USB tokens (i.e., "thumb drives"), USB hard drives, CDs/DVDs, Firewire devices, external serial advanced technology attachment devices, mounted network shares, or other removable media. If the devices are not required for business use, they should be disabled. Configure systems so that they conduct an automated anti-malware scan of removable media when it is inserted. All e-mail attachments entering the organization's e-mail gateway should be scanned and blocked if they contain malicious code or file types unneeded for the organization's business. This scanning should be done before the e-mail is placed in the user's inbox. This includes e-mail content filtering and web content filtering. Apply anti-virus scanning at the Web Proxy gateway. Content filtering for file-types should be applied at the perimeter. Deploy features and toolkits such as Data Execution Prevention (DEP) and Enhanced Mitigation Experience Toolkit (EMET), products that provide sandboxing (e.g., run browsers in a VM), and other techniques that prevent malware...
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...they will not auto-run content from USB tokens (i.e., "thumb drives"), USB hard drives, CDs/DVDs, Firewire devices, external serial advanced technology attachment devices, mounted network shares, or other removable media. If the devices are not required for business use, they should be disabled. Configure systems so that they conduct an automated anti-malware scan of removable media when it is inserted. All e-mail attachments entering the organization's e-mail gateway should be scanned and blocked if they contain malicious code or file types unneeded for the organization's business. This scanning should be done before the e-mail is placed in the user's inbox. This includes e-mail content filtering and web content filtering. Apply anti-virus scanning at the Web Proxy gateway. Content filtering for file-types should be applied at the perimeter. Deploy features and toolkits such as Data Execution Prevention (DEP) and Enhanced Mitigation Experience Toolkit (EMET), products that provide sandboxing (e.g., run browsers in a VM), and other techniques that prevent...
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...Physical Security The devices are highlighted in red and placed in a green box represent the DMZ which is needed to establish secure email and web ingress traffic. The green box around the red devices represents the physical security of the devices in the DMZ. The devices that are highlighted blue and placed in the yellow box represents the devices on the network that controls egress traffic. The yellow box represent the physical security for those devices. Filtering Schema The Ingress traffic will flow through the router where its filter through the firewall then Proxy Server. After its filter by the Proxy Server it will flow to the Web and Email Servers where it makes contact with the switch-first network device. Anti-virus, malware, and intrusion detection software will be implemented to discover any harmful traffic that may have been missed by the firewall or was a product of an end-user inadvertently downloading malicious malware onto the network. It’s critical to close all unused ports on the network to reduce the risk of attack. There will be a policy in place that updates patches for all VPN and remote-access end-users to ensure that the devices security corresponds with the rest of the network. A layered approach would be to also implement account threshold, attempts, and reset authentication policies. The Diagram below is an example of what devices would be in a DMZ and the position that the Ingress traffic would flow to in order to maintain security...
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...Discuss the roles and motivations for separately filtering ingress and egress traffic in the enterprise network. Describe separate conditions for both ingress and egress traffic as they transit the network. Discuss: What roles do ingress and egress filtering play in protecting a network? How do protective isolations help to protect a network? Why do we need to separate and isolate the types of traffic? Ingress filtering is the filtering of any IP packets with untrusted source addresses before they have a chance to enter and affect your system or network. It can protect users from malicious attacks based on spoofing, where a hacker attempts to make a packet look like it originated from somewhere else. Internet service providers (ISPs) typically use ingress filtering to defend their customers and an individual home or office network can have additional safety measures in place. One major use for ingress filtering is to combat denial of service (DOS) attacks. These attacks rely on flooding networks with packets, many of which are spoofed to conceal their origins. The network can catch packets an ISP may not have identified as a problem, depending on the type of filtering used. This adds an extra layer of security for individual users, along with other safety measures like scanning incoming information for viruses and other malicious software that may pose a risk to the safety of computer systems or data on the network. It is also possible to compare the spoofing information against...
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...In researching the needs for Abbon Laboratories in regards to their email server, I researched Naïve Bayesian Filters. Bayesian spam filtering; is a statistical technique of e-mail filtering. It makes use of a naive Bayes classifier to identify spam e-mail. The Bayesian classifiers work by associating the use of tokens (typically words, phrases, etc), with spam and non-spam e-mails and then using Bayesian inference to calculate a probability that an email is or is not spam. Bayesian spam filtering is considered to be a powerful procedure for dealing with spam, that can be tailored to the email needs of individual users, and gives low false positive spam detection rates that are generally acceptable to users. The process of Bayesian spam filtering works in the way of distinguishing particular words which have a higher probability of occurring in spam email. This filter however, doesn’t know these probabilities in advance, and must be first trained so it can build them up. In order to train the filter, the user must first manually indicate whether a new email is spam or not. For all the words in each training email, the filter will adjust the probabilities that each word will appear in spam or legitimate email in its database. After training the system, the word probabilities are used to compute the probability that an email with a particular set of words in it belongs to a particular category. Each word in the email contributes to the email’s spam probability, or only...
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...and the users. The system recommends to the users the areas they might be interested in during browsing. The system is responsible for solving the problem that is being experienced today of information overload (Hang, Hsiao, 2013). There are different algorithms, and they are responsible for producing the different systems. There is the system that collaborates and filters, the system that is based on content, the hybrid system, and the structure based system. All the four systems are determined by the different algorithms operating in each (Pu, Chen, & Hu, 2012). Introduction This recommender system is a subclass of the information filtering system that is responsible for predicting and rating the weight of an item as per the user requirements. In the recent years, the systems have become extremely important and are applied in a variety of areas. These areas include books, movies, and news. As the user searches a given book, then the system is responsible for giving the various options to a book or the goods he is searching. The systems have simplified the work of searching on the internet. The recommender systems are also available for experts, jokes insurance, online...
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...Procedure/Method First, we were to measure and record the mass of a beaker, then transfer about 1 gram of the salt mixture into the beaker, measure, and record the combined mass. Then, we had to fill a 400-ml beaker with deionized water and test it to make sure that the ph was just basic. We then combined the deionized water and salt by adding about 150ml of the deionized water to the salt mixture. We then stirred the combined mixture for about 2-3 minutes and then let it sit so that the precipitate would settle. After it settled, we covered the beaker with a watch glass and warmed it up on a hot plate at 75C for about 15 minutes, periodically stirring the solution. After 15 minutes, we removed the beaker from the heat and allowed the precipitate to settle again. While we waited for the precipitate to settle, we prepared wash water by heating up about 30 ml of deionized water at 70-80C. We then placed filter paper in a filter funnel to set up gravity for filtering. On the side, we took some of the solution’s supernatant and half-filled two test tubes using a pipet. Thereafter, we took the rest of the solution started filtering it with the use of a rubber policeman. IF necessary, we were to use the wash water to wash away any precipitate into the flter. After the filtering was completed, we were to remove the filter, with the precipitate on top of it, and store it away so that it was able to air-dry until the next lab class. We took two trials of this. Meanwhile, we came back to the two test...
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...Assignment 3 – Classification Note: Show all your work. Problem 1 (25 points) Consider the following dataset: ID | A1 | A2 | A3 | Class | 1 | Low | Mild | East | Yes | 2 | Low | Hot | West | No | 3 | Medium | Mild | East | No | 4 | Low | Mild | East | Yes | 5 | High | Mild | East | Yes | 6 | Medium | Hot | West | No | 7 | High | Hot | West | Yes | 8 | Low | Cool | West | No | 9 | Medium | Cool | East | Yes | 10 | High | Cool | East | No | 11 | Medium | Mild | West | Yes | 12 | Medium | Cool | West | No | 13 | Medium | Hot | West | Yes | 14 | high | Hot | East | Yes | Suppose we have a new tuple X = (A1 = Medium, A2 = Cool, A3 = East). Predict the class label of X using Naïve Bayesian classification. You need show all your work. Problem 2 (25 points) Consider the following dataset D. ID | A1 | A2 | A3 | Class | 1 | Low | Mild | East | Yes | 2 | Low | Hot | West | No | 3 | Medium | Mild | East | No | 4 | Low | Mild | West | Yes | 5 | High | Cool | East | Yes | 6 | Low | Hot | West | No | 7 | High | Hot | West | Yes | 8 | Low | Cool | West | No | 9 | Medium | Cool | East | Yes | 10 | High | Hot | East | No | 11 | Medium | Mild | East | Yes | 12 | Medium | Cool | West | No | 13 | High | Hot | West | Yes | 14 | High | Hot | East | Yes | (1) Compute the Info of the whole dataset D. (2) Compute the information gain for each of A1, A2, and A3, and determine the splitting attribute (or the best split attribute)...
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...IJCSI International Journal of Computer Science Issues, Vol. 8, Issue 4, No 1, July 2011 ISSN (Online): 1694-0814 www.IJCSI.org 374 Dynamic User Interface Based on Cognitive Approach in Web Based Learning L.Jayasimman1, A.Nisha Jebaseeli 2, Dr.E.George Dharma Prakashraj 3 and J.Charles 4 1 Computer Application, Anna University, J J College of Eng. And Tech. Trichy, Tamilnadu, India 2 Computer Science, Bharathidasan University, BDU Constituent College Trichy, Tamilnadu, India 3 Computer Science and Engineering, Bharathidasan University Trichy, Tamilnadu, India 4 Computer Science, Bharathidasan University, Arignar Anna Govt. College Trichy, Tamilnadu, India With bandwidth increasing at a constant pace, technology in education has become an important part for delivery of educational content to students. Online learning in various forms is gaining popularity but lacks the adaptability required to hold the learners attention due to its rigid structure. Though animation and powerful graphics enhance the learning content, delivery of content according to learners need is yet to become a reality. It is not possible to build a l earning system that can satisfy every learner as some people respond best when they see basic facts on a clean page, others when they have a lot of charts and graphs at their fingertips. To overcome these shortcomings the content delivery itself can be made dynamic based on the learner's need. In this paper we propose a novel method...
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...is to separate a mixture of sand and salt. Materials: * Small beaker * Electric balance * Sand * Salt * Water * Graduated cylinder * Stirring rod * Filter paper * Flask * Rubber policeman * Wash bottle * Funnel * Bunsen burner complete with rubber tubing and a source of gas * Hot hands * Insulator pad * Ring stand complete with a ring * Wire gauze * Striker Pre-lab Questions: 1. Water will be useful in separating the salt and sand because salt is soluble in water, which allows it to dissolve into a homogenous mixture, allowing for filtering of the sand. 2. Properties of sand and salt that will help separate them are that salt is water soluble, and the sand is insoluble in water. 3. The three things that could go wrong in this experiment are: * During the evaporation of water while using the Bunsen burner, the flask might crack or explode – this can be avoided by not heating the flask over a prolonged period of time, and not heating it too intensely. * Some of the sand may be lost during the filtration – this can be avoided by carefully filtering the mixture, and making sure that all of the sand has been washed off from the beaker, and the rubber policeman. * Some of the salt may be lost if the salt doesn’t dissolve completely or if some of the salt water is spilled – this can be avoided by making sure that all of the salt has dissolved, and by being very careful while stirring...
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...the absence of the oysters filtering capabilities and habitat development from oyster reefs and a healthy and thriving oyster population. The proposed reintroduction of the native oyster population to the Navesink and Shrewsbury estuary where the species is a basically extinct due to overharvesting, poor resource management and pollution will result in improved water quality, biodiversity and the overall environment...
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...One of the main reasons we should save the wetlands is because we need them. They soak up excess water and help clean up water left behind by floods. wetlands also provide a habitat for animals including 50% of federally listed and endangered animals. wetlands also clean our left over water, the plants filter the the leftover water and convert it to a less harmful substance. Although wetlands are great at filtering water they can't do it all, stuff like industrial waste,sewage and storm water runoff they can't clean it out. One thing that really angers and confuses me is why pepole build over them in the first place. Its’ hard to build over them, the places will sink, its messy and its ruining the environment why?! According to the state of florida wetlands were once thought to be useless...
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...the acid after recrystallization which was 1.3g. Then it should be multiplied by 100 to get a percentage. We achieved 51.5% after recrystallization. This was considerably lower than we had expected. Although we knew that the weight of the acid would be reduced we did not expect it to be so dramatic. Recrystallized substances are normally purer than standard samples because the impurities or contaminants get removed by the filtering, evaporating and separation that occurs during the recrystallization. Results After recrystallizing the salicylic acid we calculated the percentage recovery. The result we achieved was not what we had expected. We had expected some of the acid to have been lost and the recovery be reduced. The results we got showed that only 51.5% of the acid remained after the crystallisation. This was surprising because almost half of the original substance of salicylic acid had gone. The original mass was 2 grams, after the crystallisation it was 1.03 grams. The reason I believe that the recovery was only 51.5% was because when filtering the solution some of the crystals would have been left behind on the filter paper or the...
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...as the lab work. Learning this difficult section of the course can be done with hard work and sharp attention. Purpose: The purpose of this lab was to learn how to connect calculations with real life examples. Doing this lab while doing the calculations for the molarity and molar masses, made it more challenging, however it did help in seating the knowledge and connecting it to the course. Procedure: To start, the dry Calcium Chloride Dihydrate, was weighed out and mixed with a small amount of distilled water. After that step the molarity of the CaCl2 was determined and logged in the data sheet. Similar steps were followed in terms of measuring dry material, weighing it, and then mixing it with distilled water. This will be necessary in order to observe the reaction and calculate more. Then the water was now filtered in the paper filter, this filter would later be dried in the sunlight and weighed to measure the mass of the product. After the filtering was complete, the percent yield could be calculated, as well as the actual mass of the precipitate. Data: |Initial: CaCl2*2H20 (g) |1.0 g | |Initial: CaCl2*2H20 (moles) |.0068 | |Initial: CaCl2 (moles) |.0068 ...
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...Mrs.Leinweber Oceanography 14 October 2015 Water Desalination Plant Report To begin, when arriving to the desalination plant I didn’t really think there was much of process to turn salt water into drinkable freshwater. After going through the plant and being shown exactly how the salt particles and other minerals are separated I realized that there are many steps to the solution/process. First water goes through the water intake then goes through the ultrafiltration process, this acts like a filter for all particles over 10-20 Nano meters in size examples of these Nano particles such as pollen, algae, bacteria, viruses, germs and organic molecules. Even after the ultrafiltration process there are still sodium and other minerals and particles that we cannot healthfully consume. This is where the second process takes place and this is Reverse Osmosis, when this procedure occurs a device called an Energry Recovery Device takes in both water and salt molecules and splits them apart making the water purified from all sodium and other oceanic particles, this exact procedure of splitting the molecules apart uses the most energy. This is why the (ERD) device was then invented by ERI, because not only does it purify the water it transfers pressure and reuses up to 40 percent of the energy it took to split and filter all the particles. It takes two gallons of salt water to create one gallon of fresh water making the salt water to fresh water conversion ratio 2:1. It takes one thousand...
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