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Networking

What is Firewall as a Service?

What is firewall as a service (FWaaS)? Firewall as a Service (FWaaS) is a cloud-based network security model that provides firewall protection as a centralized, scalable service rather than through traditional on-premises hardware. FWaaS simplifies management, enhances security across distributed environments, and enables secure access from any location. How Firewall as a Service Works –…
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What is a Bastion Server?

What is a Bastion Server and Why is it Used? A bastion server (or bastion host) is a special-purpose computer designed and configured to withstand attacks. It acts as a secure gateway between a public network (like the internet) and a private network, enabling administrators to access internal systems without exposing those systems directly to…
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What is an ARP Table?

What is an ARP table and how does it work? The ARP (Address Resolution Protocol) table is a critical component of network communication in IPv4-based networks. It functions like a phone book for your computer, mapping IP addresses (Layer 3) to MAC addresses (Layer 2) so that devices can communicate over a local network. When…
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What is a Subnet Mask?

What is a subnet mask and how does it work? A subnet mask is a 32-bit number used in IPv4 networking that helps divide an IP address into two components: the network portion and the host portion. It determines which part of the IP address identifies the network and which part identifies the device (host)…
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What is the Address Resolution Protocol (ARP)?

What is ARP and how does it work? The Address Resolution Protocol (ARP) is a communication protocol used for discovering the link-layer address (MAC address) that corresponds to a given network-layer address (IP address). It’s an essential part of the IPv4 networking stack and is used to enable communication between devices on the same local…
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What is DevOps?

What is DevOps? DevOps is a set of practices, tools, and a cultural philosophy that brings together software development (Dev) and IT operations (Ops). The goal of DevOps is to shorten the software development lifecycle and deliver high-quality software continuously and reliably. Instead of development and operations working in silos—where developers write code and toss…
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What is DPI (Deep Packet Inspection)?

What is DPI (Deep Packet Inspection)? DPI is a type of data processing used by network devices (like firewalls, routers, or intrusion detection systems) to inspect the actual contents of data packets as they pass through a network. How It Works: When a packet is transmitted over a network, it contains: Header (source, destination, protocol…
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What is FWaaS (Firewall as a Service)?

What is FWaaS? Firewall as a Service (FWaaS) is a cloud-based security solution that delivers firewall functionality via the internet, rather than through traditional on-premises hardware. It provides centralized, scalable, and policy-driven protection for users, applications, and data—no matter where they’re located. Key Features of FWaaS: Cloud-Native Firewall Hosted in the cloud, removing the need…
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What is Zero Touch Provisioning?

What is zero touch provisioning? Zero Touch Provisioning (ZTP) is a process that automates the configuration and deployment of network devices without the need for manual intervention. When a new device (like a router, switch, or firewall) is powered on and connected to the network, it automatically retrieves its configuration settings, firmware updates, and policies…
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What is Advanced Encryption Standard (AES)?

What is Advanced Encryption Standard (AES)? The Advanced Encryption Standard (AES) is a widely used encryption algorithm designed to protect sensitive data. It is a symmetric key encryption algorithm, meaning the same key is used for both encrypting and decrypting data, as opposed to asymmetric key encryption, where different keys are used. AES is known…
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What is Address Resolution Protocol (ARP)?

What is address resolution protocol (ARP)? Address Resolution Protocol (ARP) is a network protocol used to map an IP address (logical address) to a device’s MAC address (physical address) within a local network. It operates at the Data Link Layer (Layer 2) of the OSI model and is essential for enabling communication between devices in…
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What is DNS?

What is DNS? DNS (Domain Name System) is often referred to as the “phonebook of the internet.” It is a hierarchical naming system that translates human-readable domain names (like www.example.com) into machine-readable IP addresses (like 192.0.2.1) and vice versa. This process allows users to access websites and services without needing to remember complex numerical IP…
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