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Unit 3 Assignment 3: Setting File File Permissions

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Because Linux is only as secure as it is configured to be, the user must take many precautions to ensure that the server stays secure. Having very little or no security at all can pose a great problem for the system, network, and server, not to mention the company involved. If the server is not secure, the company can be in big trouble as private information can be leaked. Important data that should only been seen by certain employees can possibly be seen by all employees. This could cause a huge problem. Setting file permissions will ensure that only those employees who are supposed to see the private information, will be the only ones to see it. File permissions need to be set by department. For example, employees in marketing does not need to see files from anyone …show more content…

Setting file permissions is a form of DAC because it is the owner’s discretion. Configuring as many security layers as the user can will ensure the server will stay secure. Not all OS are 100% secure, but they can be configured to make it very hard for a hacker to …show more content…

One way of making sure your server is secure it to enable the iptables. If unauthorized access is attempted, iptables (firewall) will ensure the access will be denied. Another way of securing the server is by using Secure Shell (SSH) which is a secure protocol. Any communication with the server is encrypted with SSH. SSH can be configured to restrict user access. Physical access can be restricted by enabling BIOS password and protecting GRUB with a password. This will restrict the physical access, as will disabling boot access from a CD/DVD and any external devices by configuring the BIOS to disable booting. There is no need to have a variety of services installed. If you don’t use them, don’t install them. Packages can be useless and can pose a threat with vulnerabilities. Avoid doing that. You should also find any unwanted services from the

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Locks: There is a need for locks on both the building and Central wiring closet. These locks will limit access to the physical network. They will also provide a barrier to stop someone from walking up and just plugging in something into the network. Everyone always focuses on the logical setup of the network and forgets that physical access is just as important. The same locks should be used for the alternate site where the backups are.

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All data that is transmitted over a network is open to being monitored. One way to create a more secure environment would be to restrict file permissions. It is usually recommended that file permissions are set so that only necessary access is granted. Another way to create a more secure environment would be to use secure passwords to verify the user’s identity. Password security is very important when it comes to protecting not only the network, but the user and workstation.

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(1/2 points) Answer: - By this we can maintain our permission strategy by simply adding users to and removing them from groups. While the security principals to which we can appoint NTFS permissions can be users or groups, it is good not to assign authorizations to individual user but to group. Question 5

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Existing basic unit is shown in fig.2.1. As shown in fig.2.1, the basic unit consist of three dc voltage sources and five unidirectional power switches. In this structure, power switches (S_2,S_4),(S_1,S_3, S_4, S_5), and (S_1,S_2,S_3, S_5) should not be simultaneously turned on in order to protect the dc voltage sources from the short circuit. Table 2.1 shows the existing basic unit power switches turn on and off states, where the basic unit is able to generate three different voltage levels at the output that is 0, V_1+V_3, and V_1+V_2+V_3. It is important to note that the basic unit is only able to generate positive levels at the output.

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Antivirus also analyses all incoming and outgoing requests and pass only legitimate requests. Step 06: Connect your phone only with trusted Wi-Fi. Wi-Fi networks that are not secure may allow a hacker to incept your data when you are online. When you need to do the online transactions through online banking always prefer your personal network source instead of public Wi-Fi . Step 07: Avoid leaving your phone alone in public places.

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\section{Towards Solution} \label{sec:colocation:solution} We now show analytically how co-locating applications and data together in a micro-cloud reduces energy consumption. In the table below we list all the notations used in the model. %\newpage \begin{center} \begin{tabular}{l | l} Notations & Descriptions\\ \hline M & Total Number of micro clouds\\ A & Total Number of Applications\\ H & Total Number of Hosts\\ $E_{ad}$ & active to dormant energy consumption\\ $E_{da}$ & dormant to active energy consumption\\ $E_{sa}$ & sleepy to active energy consumption\\ $E_{as}$ & active to sleepy energy consumption\\ $m_{ic}$& Machine i in a micro-cloud c\\ $R_e$& read energy consumption rate\\ $W_e$& write energy consumption rate\\ $E_{cpu}$

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The following are some of the security features which have been introduced in Windows 10: 1. Device guard- this feature is intended to block zero-day attacks. This has implemented in such a way that applications which try to access the Windows machine and its network are vetted. Applications which have not been signed by a particular software vendor, the enterprise itself and the Windows app store are blocked. Companies such as the Acer, Toshiba, HP, Fujitsu, Lenovo and NCR have colluded with Microsoft so that they can make use of this application in their devices.

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Ramesh, I think the least privilege principle is very important to any security plan and companies should embrace it. Least privilege principle would help to reduce the access that malware could use on a compromised system. A cracker would also be limited to the user’s access right of the user that is logged into a compromised system. You bring up a good example of how each type of user would have a different level of access based on the duties they must perform.

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All staff must adhere to the following policies relating to Copyright issues within the workplace: 1. Staff must not make

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These precautions include: A UPS – uninterruptable power supply that ensures that all of the vital servers and switches are kept running for a small period of time that allows all of the servers to shut down properly with minimal data loss. During the time that the UPS is powering the devices (if the failure is a result of power loss), any network connectivity issues would be flagged and potentially solved before the power in the UPS runs out. Another procedure that is in place to prevent against any network failure is the redundant network layout. This is also set in place so that if a certain path to a location goes down, then another path can be made with little or no

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The eight access rights include the creation and deletion of object, subject and access rights for read, grant, delete, and transfer. The area that was limiting within this model was associated with the defining a system of protection. This

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The principle of confidentiality means not passing on personal information about the families, children or colleagues that staff work with. It also means a set of rules or a promise that limits access or places restrictions on certain types of information. Confidentiality means not sharing information about people without their knowledge and agreement, and ensuring that written and electronic information cannot be accessed or read by people who have no reason to see it. Confidentiality is important because: -The person who does not keep information confidential, cannot be trusted.

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Staying Safe Online - for Teenagers & Adult Please carefully consider and abide by the tips below and remember that they apply to public posts and private messages. The importance of staying safe online cannot be overestimated. Always keep in mind that there are lots of dangerous people online. Many of them are very good at pretending to be someone else and winning your trust. Please read the SMART Guidelines below, for useful tips on staying safe online.

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