lesson10

lesson10 - Maintaining Network Health Maintaining Lesson 10...

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Maintaining Network Health Maintaining Network Health Lesson 10
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Skills Matrix Skills Matrix Technology Skill Objective Domain Objective # Understanding the Components of NAP Configure Network Access Protection (NAP) 3.2
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Public Key Infrastructure Public Key Infrastructure Public key infrastructure (PKI) consists of a number of elements that allow two parties to communicate securely, without any previous communication, through the use of a mathematical algorithm called public key cryptography. Public key cryptography, as the name implies, stores a piece of information called a public key for each user, computer, and so on that is participating in a PKI.
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Public Key Infrastructure Public Key Infrastructure Each user, computer, and so on also possesses a private key, a piece of information that is known only to the individual user or computer. By combining the well-known and easily obtainable public key with the hidden and well- secured private key, one entity (you, for example) can communicate with another entity (a secured Web site, for example) in a secure fashion without exchanging any sort of shared secret key beforehand. A shared secret key is a secret piece of information that is shared between two parties prior to being able to communicate securely.
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Certificate Authority (CA) Certificate Authority (CA) A Certificate Authority (CA) is an entity, such as a Windows Server 2008 server running the AD CS server role, that issues and manages digital certificates for use in a PKI. CAs are hierarchical , which means that many subordinate CAs within an organization can chain upwards to a single root CA that is authoritative for all Certificate Services within a given network. Many organizations use a three-tier hierarchy, where a single root CA issues certificates to a number of intermediate CAs, allowing the intermediate CAs to issue certificates to users or computers.
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Digital Certificate Digital Certificate Sometimes just called a certificate. This digital document contains identifying information about a particular user, computer, service, and so on. The digital certificate contains the certificate holder’s name and public key, the digital signature of the Certificate Authority that issued the certificate, as well as the certificate’s expiration date.
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Digital Signature Digital Signature This electronic signature (created by a mathematical equation) proves the identity of the entity that has signed a particular document. Like a personal signature on a paper document, when an entity signs a document electronically it certifies that the document originated from the person or entity in question. In cases where a digital signature is used to sign something like an email message, a digital signature also indicates that the message is authentic and has not been tampered with since it left the sender’s Outbox.
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Certificate Practice Statement and Certificate Practice Statement and Certificate Revocation List
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lesson10 - Maintaining Network Health Maintaining Lesson 10...

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