Term 421
Named ACL
A Named ACL is a list of rules applied to a network device, identified by a name instead of a number, that controls which traffic is allowed or blocked based on source and destination IP addresses, protocols, and port numbers.
Acronym study
Terms 421–450 of 754 ISC2 CC 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 421
A Named ACL is a list of rules applied to a network device, identified by a name instead of a number, that controls which traffic is allowed or blocked based on source and destination IP addresses, protocols, and port numbers.
Term 422
NAT (Network Address Translation) is a method that allows multiple devices on a private network to share a single public IP address when accessing the internet.
Term 423
A NAT Gateway is a managed AWS service that allows instances in a private subnet to connect to the internet or other AWS services while preventing the internet from initiating connections back to those instances.
Term 424
A NAT instance is a virtual machine that forwards traffic from a private subnet to the internet, performing Network Address Translation (NAT) so that private instances can reach the internet without exposing them to inbound connections.
Term 425
NAT overload is a form of network address translation that allows many devices on a private network to share a single public IP address by using unique port numbers to track each connection.
Term 426
A legally binding contract that restricts the sharing of confidential information with unauthorized parties.
Term 427
Need to know is a security principle that restricts access to information or resources only to individuals who require that access to perform their job duties.
Term 428
NetFlow is a network protocol developed by Cisco that collects and monitors IP traffic data to provide visibility into network usage, performance, and security.
Term 429
A Network Access Analyzer is a security tool that monitors and analyzes who and what is trying to connect to a network, checking for unauthorized access and policy violations.
Term 430
Network Access Control is a security solution that enforces policies to control which devices and users can connect to a network, ensuring only authorized and compliant endpoints gain access.
Term 431
A Network ACL is a virtual firewall that controls inbound and outbound traffic at the subnet level in a cloud network, acting as a stateless packet filter.
Term 432
Network monitoring is the practice of continuously observing a computer network for issues like slow performance, failures, or security threats to keep it running smoothly and reliably.
Term 433
A network perimeter is the boundary between an organization's internal trusted network and external untrusted networks like the internet, where security controls are deployed to protect internal assets.
Term 434
Network segmentation is the practice of dividing a computer network into smaller, isolated parts to improve performance, contain security threats, and simplify management.
Term 435
Network telemetry is the automated process of collecting, transmitting, and analyzing data from network devices to monitor performance, detect issues, and improve security in real time.
Term 436
Network Time Security (NTS) is a protocol that secures time synchronization between devices by authenticating time servers and encrypting time data.
Term 437
nftables is a modern Linux kernel packet classification framework that replaces the older iptables, ip6tables, arptables, and ebtables tools for configuring network packet filtering, NAT, and firewall rules.
Term 438
The NIST Cybersecurity Framework is a set of voluntary guidelines, standards, and best practices created by the National Institute of Standards and Technology to help organizations manage and reduce cybersecurity risk.
Term 439
Non-repudiation is a security principle that ensures a party in a digital transaction cannot deny their involvement or the authenticity of their digital signature.
Term 440
Network Time Protocol is a networking protocol used to synchronize the clocks of computers and devices over a network to a common time reference.
Term 441
A numbered ACL is an access control list on a router or firewall that uses a number to identify the list and define rules for permitting or denying traffic based on source and destination IP addresses, ports, and protocols.
Term 442
OAuth abuse is the exploitation of the OAuth authorization framework by attackers to gain unauthorized access to user data or systems by manipulating tokens, redirects, or consent processes.
Term 443
OIDC federation is a method that lets users log into multiple applications or services using a single identity from a trusted provider, based on the OpenID Connect protocol.
Term 444
An On-Demand Instance is a virtual server you can rent by the hour or second with no long-term commitment, paying only for what you use.
Term 445
A one-time password is a temporary, single-use code that authenticates a user for one login session or transaction.
Term 446
OpenSSH is a suite of tools that lets you securely connect to and manage remote computers over an unsecured network like the internet.
Term 447
Operational intelligence is the real-time analysis of IT system data to detect patterns, anomalies, and threats as they happen, enabling immediate action to protect systems and maintain performance.
Term 448
Operational Technology (OT) refers to the hardware and software systems that monitor, control, and manage physical devices, processes, and infrastructure in industries like manufacturing, energy, and utilities.
Term 449
An Organization is a top-level container in Google Cloud that represents your company or entities and serves as the root node for all your cloud resources, policies, and access control.
Term 450
Origin access control is a security mechanism that restricts access to a network, system, or resource based on the verified identity or attributes of the requesting entity.