22 terms
Firewall Terms
The firewall is one of the most well known cybersecurity concepts. It describes the security system that monitors and filters network traffic between your devices and external networks. In this glossary page, learn everything about firewalls and the terms related to this cybersecurity tool.
Next-Generation Firewall
A next-generation firewall (NGFW) is a modern security system that checks the data type, the sender, and what the data contains to decide if it’s safe or not.
Zone-based firewall
A zone-based firewall is a network security tool that sets up virtual zones in your system.
VPN firewall
VPN firewall is a type of firewall device used to prevent harmful or unauthorized users from accessing or exploiting VPN connections.
Virtual firewall
A virtual firewall is a service or device that filters and monitors network traffic for virtual machines (VMs) in a virtual environment.
Stateless firewall
A stateless firewall is a type of network security device that processes each data packet individually to determine whether the data it contains presents a threat to the organization.
Stateful inspection
A stateful inspection is a type of firewall technology frequently used in computing.
Stateful firewall
A stateful firewall, also called dynamic packet filtering, is a network security system that monitors the operational state of active connections and makes decisions about permitting network traffic based on the state information.
Screened subnet firewall
A screened subnet firewall is network security architecture that delivers an additional layer to protect against third-party attacks.
Port knocking
Port knocking is a technique for externally opening ports that by default, the firewall keeps locked.
Personal firewall
A personal firewall is a software app that monitors and manages network traffic going to and coming from a computer or other device.
Perimeter firewall
A perimeter firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
Packet filtering
Packet filtering is a technique used to control network traffic by analyzing the data packets that are transmitted between devices.
Hybrid firewall
A hybrid firewall is a network security system that merges features from various kinds of firewalls.
Host-based firewall
A host-based firewall is a firewall installed directly on an individual device, rather than on a whole network.
FWaaS
FWaaS, or firewall as a service, is a cloud-based security solution that helps organizations protect their applications and data from unauthorized access and cyberthreats.
Firewall: A definitive guide
A firewall is a cybersecurity tool that monitors network traffic, blocks malicious activity, and prevents unauthorized access.
Firewall rules
Firewall rules are policies used in network security to control network traffic.
Dual-homed host
A dual-homed host is an application-based firewall that protects trusted networks (e.g., a corporate network) from malicious traffic.
DNS firewall
A DNS firewall is a protection measure that filters and controls DNS traffic to prevent users on a specific DNS network from accessing malicious or unwanted websites or resources.
Distributed firewalls
Distributed firewalls are a network security solution that applies firewall policy to all devices in a network.
Circuit-level gateway
A circuit-level gateway is a network security device that operates at the transport layer of the OSI model.
Application firewall
An application firewall is a cybersecurity tool that protects applications from layer attacks, such as SQL injection, cross-site scripting (XSS), or cookie poisoning.
The importance of firewall terminology
Understanding firewall terminology can help you recognize and better grasp the most common cybersecurity tools. With this knowledge you’ll be able to evaluate your online security, customize your cybersecurity tools based on your needs, and safeguard against cyber threats.
Boost your knowledge
In the glossary you’ll find detailed explanations on how firewalls and similar cybersecurity tools work.
Understand the ins and outs of cybersecurity
Expanding your knowledge about firewalls will let you identify the strengths and weaknesses of your personal online security.
Bring peace of mind into your online life
Learning about different types of firewalls provides an opportunity to fortify your online systems, bringing more safety to your online browsing.
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