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Active Directory
Chapter 13 Configuring Active Directory Certificate Services
49
Computer Networking
Undergraduate 1
08/04/2012

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Term
Active Directory Certificate Services (AD CS)
Definition
Server role available in Windows Server 2008 that enables administrators to create and administer PKI certificates for users, computers, and applications.
Term
autoenrollment
Definition
PKI feature supported by Windows Server 2003 and later that allows users and computers to automatically enroll for certificates based on one or more certificate templates, as well as use Group Policy settings in Active Directory.
Term
Automatic Certificate Request
Definition
Public Key Policies setting that enables computers to automatically submit a request for a certificate from an Enterprise Certification Authority (CA) and install that certificate.
Term
certificate
Definition
Digital document that contains identifying information about a particular user, computer, service, and so forth. 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. Also known as a digital certificate.
Term
Certificate Practice Statement (CPS)
Definition
Provides a detailed explanation of how a particular Certification Authority manages certificates and keys.
Term
Certificate Request Wizard
Definition
Enables a user to manually create a certificate request file by using the Certificates MMC snap-in. This wizard creates a request file that can be used by the Certification Authority MMC to generate a certificate based on the request.
Term
Certificate Revocation List (CRL)
Definition
List that identifies certificates that have been revoked or terminated as well as the corresponding user, computer, or service.
Term
Certificate Services Client–Auto-Enrollment
Definition
Public Key Policies setting that allows an administrator to enable or disable the automatic enrollment of computer and user certificates, in addition to renewing and requesting certificates based on certificate templates.
Term
certificate template
Definition
Templates used by a CA to simplify the administration and issuance of digital certificates.
Term
certification authority (CA)
Definition
Entity that issues digital certificates used by companies to sign SMTP messages exchanged between domain controllers, thereby ensuring the authenticity of directory updates.
Term
Certification Authority Web Enrollment
Definition
Enables users to manually request certificates using a Web interface, located by default at https://
Term
certutil
Definition
Extremely flexible command-line utility for administering Active Directory Certificate Services.
Term
digital certificate
Definition
Digital document that contains identifying information about a particular user, computer, service, and so forth. 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. Also known as a certificate.
Term
digital signature
Definition
Electronic signature (created by a mathematical equation) that proves the identity of the entity that has signed a particular document.
Term
Encrypting File System (EFS)
Definition
Public Key Policies setting that enables an administrator to modify the list of recovery agents by adding other accounts as recovery agents. This setting is only available in the Computer Configuration node.
Term
enrollment agent
Definition
Certificate generated by the enterprise CA that is used to generate a smart card logon certificate for users in the organization.
Term
enterprise CA
Definition
Entity that can issue certificates only to users and computers in its own forest.
Term
Enterprise Trust
Definition
Public Keys Policies setting that allows an administrator to define and distribute a certificate trust list (CTL) for external root certificate authorities (CAs). A CTL is a list of root CAs that the administrator has deemed to be reputable sources.
Term
hierarchical
Definition
Arranged in a ranking system whereby many subordinate Cas within an organization can chain upward to a single root CA.
Term
intermediate CA
Definition
In a hierarchy of certification authorities (CA), a single root CA issues certificates to several of these certification authorities.
Term
issuing CA
Definition
Certification authority (CA) that issues certificates to users or computers.
Term
key archival
Definition
Process by which private keys are maintained by the certification authority (CA) for retrieval by a recovery agent, if at all.
Term
key recovery agent
Definition
User accounts that are configured with a Key Recovery Agent certificate that allows them to restore an escrow copy of a private key.
Term
Network Device Enrollment Service (NDES)
Definition
Allows devices, such as hardware-based routers and other network devices and appliances, to enroll for certificates within a Windows Server 2008 PKI that might not otherwise be able to do so.
Term
OCSP Response Signing certificate
Definition
Template that enables digital signatures, which are required for Online Certificate Status Protocol (OCSP) transactions. The template is located on any CA that will be used as an Online Responder.
Term
Online Certificate Status Protocol (OCSP)
Definition
Protocol used by the Online Responder to respond to queries from clients requesting data about the status of a PKI certificate that has been issued by a particular CA.
Term
Online Responder
Definition
Service that responds to requests from clients concerning the revocation status of a particular certificate, returning a digitally signed response indicating the certificate’s current status.
Term
principle of least privilege
Definition
Security best practice dictating that users should receive only the minimum amount of privileges needed to perform a particular task.
Term
private key
Definition
Piece of information, used as part of the public key infrastructure (PKI), that is known only to the individual user or computer.
Term
public key
Definition
Piece of information, used as part of the public key infrastructure (PKI).
Term
public key cryptography
Definition
Mathematical algorithm utilizing public keys and private keys that is used by public key infrastructure (PKI) to communicate securely.
Term
public key infrastructure (PKI)
Definition
System of digital certificates, certification authorities (CAs), and other registration authorities (RAs) that verify and authenticate the validity of each party involved in an electronic transaction using public key cryptography.
Term
Public Key Policies
Definition
Area of Group Policy that offers greater administrative control in establishing rules and governing the issuance, maintenance, and guidelines within a public key infrastructure (PKI).
Term
recovery agent
Definition
Configured within a CA to allow one or more users (typically administrators) to recover private keys for users, computers, or services if their keys are lost.
Term
Responder array
Definition
Multiple Online Responders linked together to process status requests.
Term
restricted enrollment agent
Definition
Limits the permissions required for an enrollment agent to configure smart cards on behalf of other users.
Term
root CA
Definition
In a hierarchy of certification authorities (CA), this CA issues certificates to several intermediate CAs.
Term
self-enrollment
Definition
Feature that enables users to request their own PKI certificates, typically through a Web browser.
Term
shared secret key
Definition
Secret piece of information shared between two parties prior to being able to communicate securely.
Term
signed
Definition
Certifies that the document originated from the person or entity in question. In cases where a digital signature is used to sign something, such as 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.
Term
Simple Certificate Enrollment Protocol (SCEP)
Definition
Network protocol that allows network devices to enroll for PKI certificates.
Term
smart card
Definition
Small physical device, usually the size of a credit card or keychain fob, that has a digital certificate installed. Used with a PIN to enable logon to a secure resource.
Term
smart card enrollment station
Definition
Dedicated workstation from which an administrator or another authorized user can preconfigure certificates and smart cards on behalf of a user or workstation.
Term
smart card reader
Definition
Physical device attached to a workstation that enables users to utilize a smart card to authenticate to an Active Directory domain, access a Website, or authenticate to other secured resources.
Term
standalone CA
Definition
Entity that can issue certificates only to users and computers in its own forest. Standalone CAs are not integrated with Active Directory.
Term
subordinate CA
Definition
CA within an organization that chains upward to a single root CA that is authoritative for all certificate services within a given network.
Term
Trusted Root Certification Authorities
Definition
Public Key Policies setting that determines whether users can choose to trust root CAs and the criteria that must be met by the CA to fulfill user requests.
Term
two-factor authentication
Definition
Authentication method that requires a smart card and a PIN to provide more secure access to company resources.
Term
Web enrollment
Definition
Feature that enables users to connect to a Windows Server 2008 CA through a Web browser to request certificates and obtain an up-to-date Certificate Revocation List.
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