Access control and security

Overview Access Control Matrix model Discretionary Access Control (DAC) Mandatory Access Control (MAC) and an example model Role Based Access Control (RBAC) Access Control in Unix Sep 2009 Information Security by Van K Nguyen Hanoi University of Technology 2 .What is AC Quote from Ross Anderson (text “Security Engineering”) Its function is to control which principals (persons, processes, machines, …) have access to which resources in the system -- which files they can read, which programs they can execute, and how they share data with other principals, and so on....

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Mandatory access controls Introduction to Mandatory Access Control (Security Classes, MAC properties, Multilevel relation, Pros and cons of MAC); MAC in Oracle - Oracle Label Security, security classes, classification level.

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This thesis intends to develop application-level access control models to address several major security issues in enterprise environments. The first goal is to provide simple and efficient authorization specifications to reduce the complexity of security management. The second goal is to provide dynamic access control for Web service applications. The third goal is to provide an access control framework for Semantic Web services. In this thesis, an Authorization-Function-Based Role-based Access Control (FB-RBAC) model is proposed for controlling enterprise systems at the application level.

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Lecture "On safety and security of information systems: Access control" provide students with knowledge about: Four parts of access control; Types of access control; Formal models of access control;... Please refer to the detailed content of the lecture!

18p hoabingan205 12-12-2022 12 5   Download

Pest control practices in the vegetable crops have been heavily dominated by the routine use of broad-spectrum insecticides to control pests. Concerns have emerged about the adverse consequences of over use of pesticide. These consequences include short and longterm health hazards, contamination and environmental degradation. To minimize the pest losses farmers heavily depend on the chemical pesticides and accessing pest management information from the pesticide dealers due to weak state extension support system.

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Security-Enhanced Linux (SELinux) is an implementation of mandatory access control using Linux Security Modules (LSM) in the Linux kernel, based on the principle of least privilege. It is not a Linux distribution, but rather a set of modifications that can be applied to Unix-like operating systems, such as Linux and BSD.

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Frequently, the only protection for a URL is that links to that page are not presented to unauthorized users. However, a motivated, skilled, or just plain lucky attacker may be able to find and access these pages, invoke functions, and view data. Security by obscurity is not sufficient to protect sensitive functions and data in an application. Access control checks must be performed before a request to a sensitive function is granted, which ensures that the user is authorized to access that function....

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The class file verifier (which includes the bytecode verifier) checks that the program obeys the rules of the Java Virtual Machine (but note that this does not necessarily mean that it obeys the rules of the Java language). 3. The security manager imposes local restrictions on the things that the program is allowed to do. It is perfectly possible to customize this to allow code limited access to carefully controlled resources. This could mean allowing no access to the local file system, and network access only to the location from which the code, or its Web page, came. You...

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