Network administration defined

Chapter 1 - Networking basics. This chapter has several objectives: to give a brief history of the internet, to give the definition of the two often-used terms in the discussion of the internet: protocol and standard, to categorize standard organizations involved in the internet and give a brief discussion of each, to define internet standards and explain the mechanism through which these standards are developed, to discuss the internet administration and give a brief description of each branch.

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The chapter has several objectives: To give a brief history of the Internet; To give the definition of the two often-used terms in the discussion of the Internet: protocol and standard; To categorize standard organizations involved in the Internet and give a brief discussion of each; To define Internet Standards and explain the mechanism through which these standards are developed; to discuss the Internet administration and give a brief description of each branch.

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Users and Security Security domain The database administrator defines the names of the users who are allowed to access a database. A security domain defines the settings that apply to the user. Authentication mechanism A user who requires access to the database can be authenticated by one of the following: Data dictionary Operating system Network The means of authentication is specified at the time the user is defined in the database and can be altered later. This lesson covers authentication by database and by operating system only.

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The Grid is a highly dynamic environment. The standards governing grid services are currently being defined and software implementations are subject to revision. The resources available are continually being expanded and changing in configuration. The user community is geographically widely distributed and volatile. Managing security in this environment, whilst retaining the desired level of accessibility for users is a challenge for software designers, implementers and site administrators. ...

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LINUX IS A MULTIUSER, multitasking operating system from the ground up, and in this regard the system administrator has flexibility — and responsibility — far beyond those of other operating systems. Now, Red Hat has employed innovations that extend these duties even for the experienced Linux user. In this chapter, we look at those requirements.

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Check Point Access Control Solution A Security Gateway at the network boundary inspects and provides access control for all traffic. Traffic that does not pass though the gateway is not controlled. A security administrator is responsible for implementing company security policy. The Security Management Server enables administrators to enforce security policies consistently across multiple gateways. To do this, the administrator defines a company-wide security policy Rule Base using SmartDashboard and installs it to the Security Management Server.

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In the same way that a well-defined approach is needed to develop an effective strategic plan, an equally well-designed approach is needed to support the alignment of your organization's structure, management concepts, systems, processes, networks, knowledge nets, training, hiring, and reward systems.

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Tham khảo sách 'red hat linux networking and system administration', công nghệ thông tin, an ninh - bảo mật phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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SmartLSM Security Gateways: Remote gateways provide firewall security to local networks, while the security policies are managed from a central Security Management Server or Domain Management Server. By defining remote gateways through SmartLSM Security Profiles, a single system administrator or smaller team can manage the security of all your networks.

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A Security Gateway at the network boundary inspects and provides access control for all traffic. Traffic that does not pass though the gateway is not controlled. A security administrator is responsible for implementing company security policy. The Security Management Server enables administrators to enforce security policies consistently across multiple gateways. To do this, the administrator defines a company-wide security policy Rule Base using SmartDashboard and installs it to the Security Management Server.

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NS-2 is an object oriented simulator, written in C++, with an OTcl (Object Tool Command Language) interpreter as a front-end. Back-end C++ Defining new agents, protocols and framework. Manipulations at the byte/bit levels. if you have to change the behaviour of an existing C++ class in ways that weren't anticipated.

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Flexible analysis gives you an adaptable way of combining and aggregating key figures to suit user requirements. This flexibility helps meet the information needs of users at different levels in an enterprise. For example, flexible analyses can provide administrators with detailed information and management with aggregated information. You can also define additional key figures by applying mathematical formulas to existing key figures.

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The Border Gateway Protocol (BGP), defined in RFC 1771, allows you to create loop free interdomain routing between autonomous systems. An autonomous system is a set of routers under a single technical administration. Routers in an AS can use multiple interior gateway protocols to exchange routing information inside the AS and an exterior gateway protocol to route packets outside the AS.

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Longhorn, Windows Vista, and WindowsXP-sp2 that allow a computer administrator to develop and enforce compliance with health policies for network access and communication. NAP provides administrator-defined requirements for system health policy enforcement that help ensure computers connecting to a network or communicates on a network meet these policy requirements. NAP also provides an Application Programming Interface (API) to help administrators, developers and vendors enforce compliance with health policies for network access and communication....

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Linear media describes media with a defined beginning and a linear progression to the end. Forms of linear media such as film, audio and videotape, as well as most books are organized with this expectation. The World Wide Web, however, is organized differently. Hypermedia Hypermedia is about choice. Users simply select what interests them. A good example is an audio CD where you can choose song 5 and listen to it almost immediately. Contrast this with an audiotape where you would have to scan through from your current location on the tape to the beginning of the song....

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