Windows Server 2008 Glossary - H

Applies To: Windows Server 2008

For more Windows Server terms, see either the Windows Server 2008 R2 Glossary or the Windows Server 2003 Glossary.

Glossary - H

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hammering

A key search attack in which an unauthorized user guesses at a PIN or password many times.

HCAP

A protocol used by Access Control Server (ACS) to send and receive statements of health to and from other NAP infrastructure components. HCAP is installed on NPS so that it can function with Access Control Server (ACS).

HCEP

The protocol used by the NAP agent to request health certificates from the Health Registration Authority (HRA) and to prove the health of a client computer.

health certificate

An X.509 certificate that asserts the health of a client computer. Client computers can use this certificate to prove their identities and health through security services and mechanisms such as Internet Protocol security (IPsec) and Internet Key Exchange (IKE), which recognize the X.509 standard.

Health Certificate Enrollment Protocol

The protocol used by the NAP agent to request health certificates from the Health Registration Authority (HRA) and to prove the health of a client computer.

health policy

A collection of software requirements, security update requirements, and required configuration settings for NAP client computers.

Health Registration Authority

A component of Network Access Protection (NAP) that validates statements of health (SoHs) and approves the issuance of a health certificate to clients that pass health policy verification.

health requirement server

A software component that communicates with a Network Policy Server (NPS) and provides information that system health agents (SHAs) use to validate compliance. For example, a server running NPS might have to contact a policy server, such as an antivirus signature server, to check for the version of the current signature file. A policy server also communicates with a system health validator (SHV) to validate a statement of health (SoH) from an SHA.

hibernation

A power-saving feature that saves everything in memory on disk, turns off your monitor and hard disk, and then turns off your computer. When you restart your computer, your desktop is restored exactly as you left it.

hibernation file

A file created during hibernation that contains all CPU memory and registers information.

hierarchy

A logical structure that organizes the members of a set into parent-child relationships.

Host Credentials Authorization Protocol

A protocol used by Access Control Server (ACS) to send and receive statements of health to and from other NAP infrastructure components. HCAP is installed on NPS so that it can function with Access Control Server (ACS).

hotfix

A single, cumulative package composed of one or more files used to address a problem in a product.

hotfix package

A single, cumulative package composed of one or more files used to address a problem in a product.

HRA

A component of Network Access Protection (NAP) that validates statements of health (SoHs) and approves the issuance of a health certificate to clients that pass health policy verification.