Security Basics Essay Example for Free

Security Basics Essay Hardware firewalls are integrated into the router that sits between a computer and the Internet. They typically use packet filtering, which means they scan packet headers to determine their source, origin, destination addresses and check with the existing user defined rules to make an allow/deny decision. . Speed: Hardware firewalls are tailored for faster response times, so it can handle more traffic loads. Security: A firewall with its own operating system is less prone for attacks. This in turn reduces the security risk and in addition, hardware firewalls have enhanced security controls. No Interference: Since the hardware firewall is an isolated network component, it can be managed better, and does not load or slowdown other applications. The firewall can be moved, shutdown, or reconfigured with minimal interference to the network. Fortinet firewall. Its the most prominent hardware firewall proposed by Gartner technology research group which is widely used for Internet security. The key features of Fortinet hardware firewall are: Intrusion Prevention System (IPS) The IPS monitors network activities for malicious or unwanted behavior and can react, in real-time, to block or prevent those activities. AntiVirus/AntiSpyware/AntiMalware The advanced Antivirus technology ensures real-time protection against a multitude of attacks at the network gateway. Support two types VPN (SSL, Ipsec or Site-to-site) with bi-directional content filtering. Inspects all major protocols like SMTP, POP3, IMAP, FTP, HTTP. Software firewalls are installed on individual servers. They intercept each connection request and then determine whether the request is valid or not. Software firewall process all requests by using the server resources. Apart from performance limitation, the software firewall has numerous advantages. While comparing with the hardware firewalls, software firewalls are easier to configure and setup. Through the software firewall, we can restrict some specific application from the Internet. This makes the software firewall more flexible. The software firewall give users complete control on their  Internet traffic through a nice user friendly interface that requires little or no knowledge. Linux, CSF (ConfigServer Firewall) provides proven security via the control panels like cPanel, DirectAdmin and Webmin. From there, its quite easy to modify configurate files and stop, start and restart the applications. This makes configuring and managing the software firewall very simple. For windows, its recommended to stick on with the default windows software firewall because the third party software firewall will make the server overloaded and this leads to poor server performance. Task 2: McAfee, Panda, Norton, AVG, and Kaspersky all provides trail versions for their products. Only Panda, and AGV offer free versions of their software. Trojans horse programs in computing is generally a non-self-replicating type of malware program containing malicious code that, when executed, carries out actions determined by the nature of the Trojan, typically causing loss or theft of data, and possible system harm. This is usually contracted ironically when trying to rid your pc of viruses through online sites which are fakes and in fact introduce you to one. Malicious email attachments are a way for a sender to transmit files to another user via email. In a similar way to junk mail coming in your door at home, email users regularly receive unsolicited emails from unknown senders. These emails can often contain links to malicious web sites or have attachments containing malicious software. Usually contracted from opening emails from known unknown sources. Drive-by- downloads A drive-by download refers to the unintentional download of a virus or malicious software (malware) onto your computer or mobile device. A drive-by download will usually take advantage of (or â€Å"exploit†) a browser, app, or operating system that is out of date and has a security flaw. You get this by visiting websites running malicious codes. Task 3: Full Backups are- a complete backup of everything you want back up. Restoration is extremely fast because you’re only backing up one set. Drawback is the backing up process is slow, and requires high storage. Differential Backups look at which files you have changed since your last full backup and then creates copies of all the files different from that  one. Faster to create than full backups, restoration is faster than using incremental backup, and not as much storage is required as a full backups. Drawbacks are restoration is slower than a fullback, and creating differential backup is slower than creating an incremental backup. Incremental Backup- creates copies of all the files, or parts of files that have changed since the previous backups of any type. This method is the fastest when creating a backup, and requires the least storage space. Drawbacks it’s the slowest for restoration because it may require several sets of data to fully restore. Backups should be stored off-site because it’s a secured way of keeping files away from hackers, and potential virus, its always important to check to make sure it still functional. A cold backup site is little more than an appropriately configured space in a building. Everything required to restore service to your users must be procured and delivered to the site before the process of recovery can begin. As you can imagine, the delay going from a cold backup site to full operation can be substantial. There are the least expensive to maintain. A warm backup site is already stocked with hardware representing a reasonable facsimile of that found in your data center. To restore service, the last backups from your off-site storage facility must be delivered, and bare metal restoration completed, before the real work of recovery can begin. Hot backup sites have a virtual mirror image of your current data center, with all systems configured and waiting only for the last backups of your user data from your off-site storage facility. As you can imagine, a hot backup site can often be brought up to full production in no more than a few hours. Hot backup site are the most expensive approach to disaster recovery. Task 4: The password I choice to use was â€Å"Don’t worry about what life brings to you worry about how you’re going to deal with it!†Dwawlbtywahygtdwi24

In Response To Those Winter Sundays Essay -- essays research papers

In Response to "Those Winter Sundays" Being a child, is one of the hardest stages of ones life. They go through doing all the wrongs in order to do the right, and they socially develop into a mature and sensible human being. During this stage of a young child's life, the roles of parenting are absolutely crucial. In the poem "Those Winter Sundays" by Robert Hayden, I get a sense that the narrator does not have a special bond with his father, and that there is a sense of fear. I feel that in order to grow up and be a morally strong and stable person, you need a well-built relationship with at least one of you parents, if not both. Growing up in a very suburban town taught me many things about being a boy and even further into my life as a young man. I spent most of my childhood days running through the woods, fishing in our pond, or helping my father with some project that he had around the house. I used to always come back to him with everything for help. He would be doing something in the garage, and I would catch a fish that had swallowed the hook. I would run up to the house, break his concentration, and he would come help me. He always did that, and never seemed to mind it was like it was his job to love me and teach me how to be a good person. In the poem, I get a sense that there is no bond, like my father and I have which leads to confusion in the narrator's life. For instance, in line eight when he says "I would slowly rise and dress, feari...

Marijuana legalization

White House, it is the most commonly used recreational drug in the United States. It has been proven to be less harmful than alcohol, which is currently legal; and prohibition caused a black market to arise leading to an increase in an organized criminal activity. The fght against those organizations is costing a great amount of money and was cause for the loss of many innocent. While there are strong arguments in support of prohibition there are stronger arguments in support of the legalization if marijuana than there are counterarguments to keep the substance illegal.When comparing the Alcohol Prohibition in the 1920s and compare hat situation with the current situation with the legal status of marihuana, we cans ee that a repetition of history is occurring. According to Douglas McVoy, at the beginning of prohibition, the consumption of alcohol fell, however eventually it increased again. Since the drug was illegal and only the black market could sell it, a significant amount of ta x revenue was removed and crime rates increased in addition to become more organized.Consumption, illicit production, and distribution grow exponentially; therefore courthouses and prison systems were exhausted from such an increase in crime due to illicit alcohol. Government spent great amount of money devoted to enforcement, in fact, the annual budget of the Bureau of Prohibition went from $4. 4 million to $13. 4 million during the 1920s, while the Coast Guard spending on Prohibition averaged over $13 million per year. (McVoy). This are some reasons that proved that alcohol prohibition was a failure to the United States.Comparing the alcohol with the cannabis prohibitions. Marijuana is the most used recreational drug in the United States, as reported by the White House (Marijuana). One could say that after a long term of prohibition, the consumption rates have increased. Like in the 1920s with alcohol, there is now a huge black market that sells marijuana and its essentially lead by organized criminal groups. According to Steve Nelson, Marijuana offenses accounted for 48. 3 percent of all drug arrests in 2012 (Nelson) and more than 80 percent of marijuana arrests are now for simple possession (Kilmer,etc. . United States government spends enormous amounts of money in the fght against drugs and the criminal groups grow more and more each day. Alcohol prohibition was considered a failure and, actually, we are experiencing some situations today that the United States taced in the 920s Since betore marihuana was prohibited, the drug was used in a medical way. It has been proven that cannabis used as a medicine can relieve chronic pain, which is cause by a significant number of pain- producing illnesses.Marijuana can assist many mental health problems, such as attention deficit disorder (ADD), post-traumatic stress disorder, obsessive-compulsive disorder, and depressions. It can also be used as an analgesic (painkiller) or an anti- inflammatory drug for autoimmun e diseases, diseases that arise when the body cannot create an appropriate immune response to substances or tissues present ormally on the body. Such diseases could be rheumatoid arthritis, complex sympathetic dystrophy, and so on (Bearman). California was the first state in the United States that legalized medical marijuana.One of the negative results of this legalization is the significant increase of individuals seeking treatment for marijuana abuse or dependence (Kilmer, etc. ). This could mean that there has been an increase in consumption. One interpretation of this phenomenon is that people which use marijuana as a recreational drug rather than a medical drug, seek treatment not to eal with a substance abuse but to manage a legal problem (Kilmer,etc. ). Even though marijuana can be used as a medical supplement, this does not mean it do not have secondary effects on human ‘s bodies.Marijuana can also get to be harmful. In fact, THC (The major component in cannabis that g ets you â€Å"high†) by binding to receptors in the basal ganglia and cerebellum can disrupt coordination and balance of the body. Therefore doing complicated tasks such as driving, participation in sports, or learning is affected. One of the long lasting effects cannabis can produce on you is psychotic disorder such as schizophrenia. This illness alters a person's ability to make good Judgments, understand reality, communicate or think clearly.Memory can also be affected by marijuana consumers, studies has proven that THC alters how information is processed in the hippocampus, a brain area responsible for memory information (National drug Institute). According to the National Institute on Drug Abuse, marijuana also affects your cardiovascular system. After a few minutes of inhaling marijuana smoke, the heart rate, which is normally between 70 to 80 beats per minute, may increase by 20 to 50 beats or even double in some cases. Mixing marihuana with other drugs can amplify thi s effect.This means that a person's risk of heart attack during the first hour after smoking is about four times his usual risk. (National Institute on Drug Abuse) Before legalizing and decriminalizing the use and possession of marijuana, a regulation system should be instituted, that, like Douglas Mcvay stated, should not be the same as systems used during the legalization of tobacco and alcohol. Those models of legalization taught the world and the United States a lesson of how not to regulate the use of these drugs (McVay).Cigarettes and alcohol advertising companies spend significant amounts of money to promote the use of their products which ultimately contributes to many health problems and eventually the death for many users. An example of a non-regulated drug after it was legalized was after the repeal of alcohol prohibition, where the death rate from liver cirrhosis increased dramatically (McVay). To prevent the abuse of marijuana, governments should build a system to regul ate its use. An important part of the system build for legalization according to RAND Corporation is the price the drug is going to have.

Coordinates Worksheets

Changes Do Happen Daily On An Organizational Behavior

Changes do happen daily in an organizational behavior. This happens as organizations move to improve their services and products or to correct the wrongs done following their previous decisions. Knowledge is part of the business realities today. This comes at a time known as the information age. In this generation people value intellectual power more than physical assets. This is further highlighted amongst the original factors of production which include; land, labor, and capital. Entrepreneurship is highly rated and organizations are mostly looking at their chief executive officers to position organizations towards success. According to Tecker International (2012), â€Å"the four knowledge basis are; Needs, wants and preferences of†¦show more content†¦Informed decisions can only be achieved by the organization relying on its available knowledge assets. This also enables the organization have a uniform agenda in its strategic, tactical and operational levels of management . It is imperative that an organization is aware of its knowledge assets and use them effectively as a key resource. The question chosen is based on Exodus Travels, the company which I worked for. During the 15 years at exodus travels I have seen lots of new working systems (systems the company uses to book passengers holidays, costings of the trips and also air ticket booking system come into place. Sometimes the Exodus has found it difficult to implement these new systems. Some employees have found it difficult to accept or adopt these changes because there is lack of clear understanding of the concepts of knowledge change which leads to confusion between the employers and the employees. Knowledge based decisions are influenced by many issues and amongst them is the intrinsic characteristics. According to Stewart (1991), while knowledge is increasingly viewed as a commodity or intellectual asset, there are some paradoxical characteristics of knowledge that are radically different notably. By passing on knowledge to others does not mean that you lose it. Much of an organization’s valuable knowledge walks out of the door at the end of the each day.

Pro-Child / Pro-Choice An Exercise in Doublethink by...

In her essay â€Å"Pro-Child / Pro-Choice: An Exercise in Doublethink?† Judith A. Boss deconstructs the argument supporting legalized abortion on the basis that it is beneficial to children in general. Boss presents the oft-used slogan of the pro-choice position, â€Å"Pro-Child / Pro-Choice†. She maintains that this slogan seems closely related to â€Å"newspeak†, which she characterizes as â€Å"†¦vocabulary pared down to a minimum so that whole ideologies are expressed in a single slogan†¦Ã¢â‚¬  (156-7). The term â€Å"newspeak† comes from George Orwell’s 1984. In the novel, these simplistic slogans serve to perpetuate â€Å"doublethink†, which entails, as Orwell writes, â€Å"holding two contradictory beliefs in one’s mind simultaneously and accepting both of them† (156).†¦show more content†¦To believe that murdering an unborn child on circumstantial grounds and to believe in the modern court proces s is an obvious form of doublethink. However, the pro-choice position has a quick rebuttal to this question by claiming that the aborted fetus is not a person or a child so â€Å"they cannot be benefited or harmed† in the first place (157). In other words, the unborn fetus is not included in definition for child in the slogan: â€Å"Pro-Child / Pro-Choice†. Seeing that this rebuttal would quickly lead to an argument concerning what constitutes personhood, Boss moves on to examine the benefits abortion-on-demand gives to the second category, the born child. Boss points out that specific research on the well being of born children since the Roe v. Wade decision of 1973 is sparse. This lack of empirical research leads one to believe that the pro-choice claim that abortion-on-demand benefits children seems to be a speculative and unsubstantiated. Boss notes a rapid decline in the social well-being of children since 1974. Since abortion-on-demand obviously does not benefit the unborn fetus, it must aid the well-being of the born child in order to be beneficial to children at all. Boss argues that ensuring abortion-on-demand is in no way beneficial to the child, and in fact, may be harmful. Boss uses the rise in teen suicide

Multifunctional Metal Organic Frameworks Environmental Sciences Essay Free Essays

Herein, I report MOFs with high selectivity of CO2 over CH4 and N2O every bit good as catalytic activity for transesterification. The ground why we research MOFs selective capturing CO2 is that CO 2 has more consequence on planetary heating than other GHGs. As a affair of fact, the CCS ( Carbon Capture A ; Storage ) undertaking is pulling planetary attending now. We will write a custom essay sample on Multifunctional Metal Organic Frameworks Environmental Sciences Essay or any similar topic only for you Order Now In order to lend to this work, I have been analyzing fabrication techniques and word picture of MOFs which can be used to capture C dioxide and catalyze transesterification reactions. Introduction As society is turning and altering fast, the ingestion of fossil fuels has increased quickly. As the consequence, we are confronting well serious jobs, one of which is planetary warming caused by nursery gases ( GHGs ) including C dioxide ( CO2 ) , methane ( CH4 ) , azotic oxide ( N2O ) , ozone ( O3 ) , H2O vapour ( H2O ) and so on. Actually, many scientists have been seting attempt into happening steps which can be used for slowing the planetary heating rate. They focused on the remotion of CO2 exhausted from pollution beginnings into the air. As portion of such attempts, the Carbon Capture A ; Storage ( CCS ) undertaking is presently afoot worldwide. In the undertaking, many scientists are seeking for the stuffs to capture GHGs and reassign them safely for hive awaying them into deep inside the ocean. One of the stuffs being developed are Metal-Organic Frameworks ( MOFs ) . MOFs are porous stuffs incorporating metal ions and organic molecules or ligands ( ions or molecules that bi nd to cardinal metal atoms to organize coordination composites ) . The advantages of MOFs are robustness and flexibleness ( Millard and Yaghi, 2005 ) . There is besides a turning involvement in MOF-based catalytic systems because of their high recyclability and responsiveness ( Farrusseng, 2009 ) . MOFs have the ability to catalyse many reactions used in industrial production. One of the reactions which MOFs can catalyse is transesterification reactions ( the procedure of interchanging the organic group R1 of an ester with the organic group R2 of an intoxicant ) , which is an of import procedure for the synthesis of biodiesel. Biodiesel made from works oils such as vegetable oil and tree oil is a nontoxic and environmental friendly fuel. Therefore, biodiesel synthesis is being considered as a possible option to fossil fuel exhaustion ( Meher, Sagar, and Naik, 2006 ) . Many scientists have studied many methods of MOFs synthesis, one of which is a molecular self-assembly ( the procedure by which molecules adopt a defined agreement without counsel or direction from an outside beginning ) . After that, they characterized these MOFs by utilizing several analysis setup such as X raies diffractometer, PXRD ( Powder X-rays Diffraction ) , TGA ( Thermogravimetric Analysis ) , EA ( Element Analysis ) equipment, cryogenic volumetric CO2 adsorption/desorption analysis equipment and GC ( Gas Chromatography ) . Exploration of MOFs In the 1965, Tomic mentioned stuffs which would today be called MOFs, metal-organic polymers or supramolecular constructions. Besides in the same twelvemonth, Biondi et Al. reported on Cu ( aaˆÂ ¦A? ) tricyanomethanide being a crystalline, polymeric compound. In 1990, Hoskins and Robson reported on the design of scaffold-like stuffs utilizing Cu ( aaˆÂ ¦A ) centres and tetracyanotetraphenylmethane. From the 1900s, constructions, belongingss and possible applications of MOFs as storage house have been studied. Nowadays several hundred different MOFs have been indicated. The characteristic of MOFs is that they contain cardinal metals linked through organic ligands, which form 3-dimensional models and the ligands normally bond via O atoms or N atoms. Furthermore, these stuffs have attracted a great attending in the last several decennaries. Applications in gas storage, contact action, and drug storage and bringing have been studied by many scientists. Particularly, among abilities above, gas storage and catalytic activity are being researching actively. Adsorption of Carbon Dioxide fig.1 MOFs capturing CO2 ( Robert, 2009 ) Recently people all over the universe think we need to cut down emanation of nursery gases and besides are doing assorted attempts to halt environmental catastrophe caused by planetary heating. There are several C dioxide emanations decrease engineerings: salvaging energy, high-efficiency energy use, non-fossil energy use like clean and renewable energy, transition engineering between renewable energy and fossil fuels, CCS ( Carbon Capture and Storage ) , ecological or biological intervention engineering and so on. Among these assorted decrease engineerings, particularly CCS is good known as the most effectual engineering ; hence, many developed states are already concentrating on the most investing and research for CCS technological development ( Wee, 2008 ) . Harmonizing to Andrew, MOFs represent a category of porous stuffs that offer these advantages for CO2 storage. A good porous web should retain its construction even when all the guest molecules are hone. Therefore, it is need test the thermic stableness and hardiness by utilizing thermic hydrometric analysis ( TGA ) . Walton et Al. conducted experiment for proving hardiness of the MOFs they made. As the consequences, they got the isotherms over a broad scope of temperatures. They figured out that inflexions in the isotherms become more defined with increasing effectual pore size and this observation was gotten without any alteration of MOFs construction. This means the MOFs they synthesized can capture C dioxide any temperature and can recycle them because they do non demo any alterations of their construction. Besides, the key to dividing CO2 from power works fluke gases is to make a porous stuff that selectively captures CO2 molecules ( red-grey-red rods stand foring O=C=O ) and non nitrogen and H2O molecules. here, the porous stuff is a metal-organic model consisting of Co atoms ( purple ) linked by an organic bridging ligand ( 1,4-benzenedipyrazolate, with N and C atoms shown in bluish and gray, severally ) ( Robert, 2009 ) . Catalysis of MOFs eq1. General equation of tranesterification reaction.Meher says, aa‚ ¬Aâ€Å"Biodiesel is deriving more and more importance as an attractivce fuel due to the consuming dodo fuel resourcesaa‚ ¬A? . Biodiesel is made by certain reaction called transesterification ( the procedure of interchanging the organic group R1 of an ester with the organic group R2 of an intoxicant ) . Harmonizing to Meher, this fuel is biodegradable and non-toxic stuffs and less release nursery emanation as compared to petroleum Diesel. The MOFs made by assorted methods can catalyse this reaction, transesterification. There is MOFs holding Cu as cardinal metal. Since Cu has late gained prominence as a accelerator for legion transmutations and MOFs incorporating Cu ( Cu ) are indissoluble in H2O and common organic dissolver such as DMF, DMSO, CH2Cl2, and EtOH, the responsiveness of the MOFs as heterogenous accelerators ( They have stage of which differs from that of the reactants. Besides, they can be reused several times ) was examined in the transesterification reaction of broad scope of esters with intoxicants. In our lab, we by and large use phenyl ethanoate and phenyl benzoate as a substrate and methyl alcohol as a dissolver. The basic equation of transesterification is like this: phenyl ethanoate methyl alcohol phenol methyl ethanoate eq2. Transesterification by utilizing phenyl ethanoate and methyl alcohol ( or phenyl benzoate ) ( or methyl benzoate ) Aside from MOFs holding Cu as cardinal metal, there are MOFs incorporating Zn ( Zn ) , dicarboxylic acids as chelator ( substance that binds peculiar ions, taking them from solution ) and bipyridyl ligands as spacer ( connection of 2D planar to organize 3D construction ) . They besides show good catalytic activity for transesterification reaction. Both of Cu MOFs and Zn MOFs are reclaimable because they are heterogenous accelerators without losing their catalytic activity. Consequently, these MOFs are greatly helpful cut down pollution caused by chemical compounds which are being ended up in the air or dirt every bit good as facilitation of biodiesel production for options to fossil fuel depletion. Decision From last several decennaries, many scientists have put attempts to synthesise stuffs to slow planetary heating occurred by nursery gases emanation. One of the stuffs they made is MOFs, which can capture C dioxide that have the most impact on planetary warming acceleration among many other nursery gases and catalyze transesterification reaction which is used for biodiesel ( alternate fuel ) production. In visible radiation of these advantages, MOFs can be first-class accelerators and great options for fossil fuel. How to cite Multifunctional Metal Organic Frameworks Environmental Sciences Essay, Essay examples