how to generate barcode in asp.net c# Lesson 1 in C#

Encoder Denso QR Bar Code in C# Lesson 1

Lesson 1
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QR Code Scanner In C#
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Building a Logical Security Infrastructure by Using Certificate Services
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Lesson 1: Building a Logical Security Infrastructure by Using Certificate Services
Generating QR In Visual Studio .NET
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Every network has a security infrastructure. Every network has rules about who can use what resource and what they can use it for. The difference between most networks and a network in which the logic of security has been designed is that the network with designed security has a strong foundation on which to build its controls. Each piece of the security puzzle can be snapped into place with minimum disruption to the network. To build this strong foundation, you must first understand certain key con cepts. This lesson teaches those concepts.
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After this lesson, you will be able to
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Describe the pillars of information security. Apply the pillars of information security to your designs. Build a logical security infrastructure by using certificate services. Identify the components of a public key infrastructure.
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Estimated lesson time: 60 minutes
Generate QR Code In None
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Generating EAN / UCC - 14 In None
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The Pillars of Information Security
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To create a logical design, the vague notion of secure must be replaced with concrete maxims. These, in turn, must be explained and interpreted so that you can use them as you create your designs. The pillars of information security include authentication, authorization, confidentiality, integrity, and nonrepudiation. These pillars are described in Table 2-1. Your ability to express each one of these concepts is a part of the foun dation on which network security rests.
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Tip When you develop a logical design, think of the things that are available to fulfill these needs. Remember, however, that technologies change, as do the ways they are expressed.
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Table 2-1
The Pillars of Information Security
Definition The way that security principals (users, computers, processes) can prove their identity before connecting to the network or to some resource contained by the network. In a traditional network, authenti cation is supported by technologies that rely on passwords. Today, additional authentication tools such as certificates, smart cards, bio metrics, tokens, and even unique devices are supported.
Pillar Authentication
2
Designing the Logical Infrastructure
Table 2-1
The Pillars of Information Security
Definition The process that dictates what a security principal can do after it is authenticated. System privileges and object-based access control lists (ACLs) are the primary methods of authorization used in the Microsoft Windows 2003 family of operating systems. The process that keeps private information private. Data, communica tions, and even code can have requirements for protection. While authorization can protect digital information, there are many ways to subvert authorization, including taking ownership of an object, placing a copy of the data on another computer, capturing information as it flows across a network, and so forth. Providing layers of security is a maxim of good security. Confidentiality allows you to do this. Confidentiality is most often obtained on a network by using encryp tion. Classic symmetric key encryption uses a single key and an algo rithm to make plain text, which is easily understood, into ciphertext, which is not. One of encryption s weaknesses is the problem of keep ing the encryption key safe. Today, a public key/private key algorithm is often incorporated for that purpose, and certificates are used to map the keys to a security principal. The ability to guarantee that information is not arbitrarily changed. Changes can be made to data, but only when authorized. Many networks and systems maintain integrity by providing authentication and authorization controls. When data is sent over a network, additional controls are needed. Network communications has long supported the use of algorithms that check integrity by comparing the result of a cal culation that includes the data sent with the result of that same calcula tion that includes the data received. If there is a difference in results of the two calculations, then the data has changed. These calculations detect accidental changes made because of poor communications and require a repeated transmission. It cannot protect the integrity of data from malicious interference. Modern communication protocols such as IPSec use encryption to protect the data that is sent from being tampered with. A method of providing undeniable proof that a security principal is the source of some data, action, or communication. Nonrepudiation can cement the assertion that I did use my credit card to make an online purchase or that the boss did send the e-mail giving me the day off. In both of these cases and in many other digital situations, the use of public key/private key technologies can provide implementation of nonrepudiation.
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