Term 451
iptables
iptables is a command-line firewall utility in Linux that uses rules to allow or block network traffic based on packet attributes like source IP, destination port, or protocol.
Acronym study
Terms 451–480 of 956 220-1102 acronyms and key terms. Each entry includes a plain-English definition and a link to the full 800-word glossary page with exam context and practice questions.
Term 451
iptables is a command-line firewall utility in Linux that uses rules to allow or block network traffic based on packet attributes like source IP, destination port, or protocol.
Term 452
ISO 27001 is an international standard that specifies the requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS).
Term 453
Job rotation is a security governance practice where employees periodically switch roles or responsibilities to reduce risk, prevent fraud, and ensure organizational resilience.
Term 454
A JSON Web Token (JWT) is a compact, self-contained token used to securely transmit information between parties as a JSON object.
Term 455
The kernel is the core program of an operating system that manages hardware resources and provides essential services for all other software to run.
Term 456
A key pair is a set of two cryptographic keys—a public key and a private key—used together to encrypt and decrypt data or to create and verify digital signatures.
Term 457
A Keyboard-Video-Mouse (KVM) is a hardware device that allows you to control multiple computers using a single keyboard, monitor, and mouse.
Term 458
A keylogger is a type of surveillance software or hardware that records every keystroke you type on your keyboard, often used without your knowledge to steal passwords and other sensitive information.
Term 459
A kill chain is a step-by-step model that describes the stages of a cyberattack, from initial reconnaissance to the final objective, helping defenders understand and disrupt each phase.
Term 460
KMS (Key Management Service) is a Microsoft technology that automates volume licensing activation for Windows and Office products within an organization's network.
Term 461
A file used by SSH to store the public keys of remote servers, allowing the client to verify the server's identity and prevent man-in-the-middle attacks.
Term 462
Kubernetes RBAC is a security mechanism that controls who can access and perform actions on resources in a Kubernetes cluster based on their role.
Term 463
Labels are descriptive text or tags attached to IT resources to organize, identify, and manage them based on attributes like purpose, environment, or owner.
Term 464
Latency routing is a DNS-based traffic management method that directs user requests to the server location which can provide the lowest network latency for that specific user.
Term 465
Lateral movement is the technique attackers use to move through a network from one compromised system to another, seeking sensitive data or higher privileges.
Term 466
LDAPS is a secure version of LDAP that encrypts all directory service communications using SSL or TLS.
Term 467
LDAPS encrypts LDAP traffic using SSL/TLS to secure directory queries and authentication over a network.
Term 468
Least privilege is a security principle that means giving users, systems, or programs only the minimum permissions they need to do their job and nothing more.
Term 469
A legal requirement is a mandatory rule or standard set by law or regulation that an organization must follow, often concerning data protection, privacy, or security practices.
Term 470
Lessons learned is the process of capturing, analyzing, and documenting knowledge gained from past incidents or projects to improve future security operations and prevent recurrence of problems.
Term 471
Licensing in IT refers to the legal agreements and permissions that govern how software, hardware, or digital content can be used, distributed, and managed.
Term 472
A light-emitting diode (LED) is a semiconductor device that emits light when an electric current passes through it, commonly used as an indicator or illumination source in electronic devices.
Term 473
Lightweight Directory Access Protocol (LDAP) is a standard protocol used to access and manage directory information over a network, such as user credentials and permissions.
Term 474
A line-of-business app is a software application that is essential for running a specific core business process, such as accounting, inventory management, or customer relationship management.
Term 475
Linux is an open-source operating system that manages computer hardware and software, widely used in servers, desktops, and embedded systems.
Term 476
A flat-panel display technology that uses liquid crystals manipulated by electric current to produce images, commonly used in monitors and laptop screens.
Term 477
LLDP (Link Layer Discovery Protocol) is a vendor-neutral protocol used by network devices to advertise their identity, capabilities, and neighbors on a local Ethernet network.
Term 478
Local Users and Groups is a Windows tool that lets you create, manage, and organize user accounts and security groups directly on a single computer, controlling who can log on and what they can do.
Term 479
A Local Zone is an extension of a cloud provider's region that places compute, storage, and networking resources closer to a specific geographic area to reduce latency for end users.
Term 480
Log management is the process of collecting, storing, analyzing, and disposing of log data generated by computer systems, networks, and applications to ensure security, compliance, and operational health.