Linux - The shell ------------------------------------------------- Introduction to the shell The command interpreter is the interface between the user and the operating system‚ hence the name "shell". The shell therefore acts as an intermediary between the operating system and the user thanks to command lines that are entered by the latter. Its role consists in reading the command line‚ interpreting its meaning‚ carry out the command‚ and then return the result via the outputs. The shell
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and Security Design Principles 4 1.10 The Unix/Linux Security Model 5 1.10.1 Properties of the Unix Superuser 5 1.10.2 The Unix Security Model — Groups 6 1.10.3 Protection For Unix Files and Directories 6 1.10.4 The Meaning of Permissions 6 1.10.5 Changing File and Directory Permissions 7 1.11 Access control lists (ACLs) 8 1.11.1 Access Tokens and User Rights 8 1.11.2 The Discretionary Access Control List 8 1.11.3 The System Access Control List 9 2. Background and Motivation 10 2.1 Background
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resources cannot be legally regarded as property.[2] Thus‚ it can be held that property ‘consists primarily in control over access’.[3] As a dynamic concept‚ the scope and nature of property has evolved from simply referring to a particular resource‚ to the legal relationship held with the resource.[4] Through this relationship‚ the owner of property generally has a right to control‚ access‚ enjoy‚ alienate‚ exclude and/or profit from their legally endorsed property. These benefits of property ownership
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Linux Security Features The security features that UNIX-like systems such as Linux rely on are making these systems clearly superior to the rest of OSson the market. These features encompass root account security measurements‚ enhanced file accessing options‚ advanced data verification‚ storage encryptions and the list is not an exhaustive on. You can choose to watch now a surf shop be launched over the internet and expect for your Linux OS to better cope with the new website‚ rather than a Windows
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to infect other computers? a. Virus b. Trojan horse c. Worm d. Backdoor 4. Which description below best describes a physical control? a. A device that limits access or otherwise protects a resource‚ such as a fence‚ door‚ lock‚ or fire extinguisher. b. A control that repairs the effects of damage from an attack. c. A device or process that limits access to a resource. Examples include user authentication‚ antivirus software‚ and firewalls. d. A management action‚ written policy‚ procedure
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Access Control: Policies‚ Models‚ and Mechanisms Pierangela Samarati1 and Sabrina de Capitani di Vimercati2 1 Dipartimento di Tecnologie dell’Informazione‚ Universit` a di Milano Via Bramante 65‚ 26013 Crema (CR)‚ Italy samarati@dsi.unimi.it http://homes.dsi.unimi.it/~samarati 2 Dip. di Elettronica per l’Automazione‚ Universit` a di Brescia Via Branze 38‚ 25123 Brescia‚ Italy decapita@ing.unibs.it http://www.ing.unibs.it/~decapita Abstract. Access control is the process of mediating
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Comment 4. How can you use praliases to regenerate a host alias file? You can use praliases to list aliases currently loaded by sendmail 5. In what file do you setup relaying for sendmail? The sendmail init script regenerates access.db from access each time you run it‚ as when you restart sendmail. 6. List the purpose of each of the following SMTP commands? a. HELO: begins the session and identifies the local system b. RCPT TO: Specifies the e-mail address of the recipient. This command
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Instructions: Compare and contrast access control models. Select an access control model that best prevents unauthorized access for each of the five scenarios given below. Which types of logical access controls should be used in each scenario? Justify your recommendations. Access control models: Mandatory access controls Discretionary access controls Role-based access controls Rule-based access controls Content-dependent access controls Nondiscretionary access controls Scenarios: 1. Shovels and Shingles
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Linux Security Technologies John Pierce SELinux (Security Enhanced Linux) is a mandatory access control in the Linux kernel that was originally developed by NSA (National Security Agency) with direct contributions provided by Red Hat Enterprise Linux (RHEL) via the Fedora Project. In the day and age of identity theft and attempted sabotage from terrorists against our country‚ it should be very apparent why an organization like NSA had such an interest in heading up development of a more
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IS3440 Final Exam Review IS3440 Final Exam Review skong@itt tech.edu skong@itt‐tech.edu CIA triad CIA triad Remote Access Remote Access Virtualization OSSTMM WINE Access control Access control Authentication Databases Authentication Databases Firewall support Firewall support /etc/sudoers /etc/passwd /etc/login.defs PAM Edit /etc/sudoers Edit /etc/sudoers file FHS FHS recommended to locate configuration files in the /etc/ path
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