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A vishing attack is a phone-based scam in which criminals use voice calls, voicemails, or internet calling services to trick people into revealing sensitive information or sending money. The term combines “voice” and “phishing,” and it is often called voice phishing. Unlike a typical phishing email, a vishing scam uses urgency, trust, and live conversation […] The post Vishing Attack: What It Is,…
Modern IT teams rarely work from a single office, and the systems they support are even less likely to live in one place. Employees work from home, branch offices, customer sites, and while travelling. Servers and endpoints may be on-premises, in the cloud, or spread across several regions. A remote administration tool gives IT teams […] The post Remote Administration Tool: Features, Benefits, and…
What Is Message Queuing Telemetry Transport (MQTT)? Message Queuing Telemetry Transport (MQTT) is a lightweight messaging protocol designed to move data reliably between connected devices. It is especially well suited to Internet of Things (IoT) systems, where devices may have limited power, small amounts of memory, or unreliable network connections. MQTT uses a publish/subscribe model. […] The…
The sliding window protocol is a networking technique that lets a sender transmit several data frames before waiting for an acknowledgement (ACK). It coordinates the sender and receiver so data arrives reliably without overwhelming the receiver or wasting network capacity. It is a core idea in reliable data transfer and a practical foundation for understanding […] The post Sliding Window Protocol:…
Digital links are imperfect. Wireless interference, a congested network, a fading satellite signal, or a scratched storage medium can flip bits or make packets disappear. Forward error correction (FEC) is the technique that lets a receiver detect and recover from a defined amount of that damage without asking the sender to transmit the data again. […] The post Forward Error Correction (FEC): How…
A service set identifier, more commonly called an SSID, is the name that identifies a Wi‑Fi network. When you open the Wi‑Fi settings on a phone, laptop, or tablet, the network names you see – such as HomeWiFi, GreenCloud_Guest, or Office-Secure – are SSIDs. An SSID helps devices find the correct wireless network and begin […] The post Service Set Identifier (SSID): What It Is and How It Works…
IP aliasing is the practice of assigning more than one IP address to a single network interface. It lets one physical or virtual network adapter receive traffic for multiple addresses—without adding another network card. Although the phrase IP aliasing is still widely used, modern Linux systems generally treat this as adding multiple addresses to one […] The post IP Aliasing: How to Assign…
Network delay, often called network latency, is the time it takes for data to travel from one point on a network to another. It is commonly measured in milliseconds (ms). While a small delay may be unnoticeable when browsing a website, high network delay can disrupt video calls, online gaming, cloud applications, file transfers, and […] The post Network Delay: Causes, Types, and How to Reduce It…
Traffic throttling is the practice of controlling how much traffic a website, application, network, or API can process within a set period. It helps prevent systems from becoming overloaded when demand suddenly increases, whether the traffic comes from legitimate users, automated bots, or malicious attacks. For businesses that rely on digital services, throttling is an […] The post Traffic…
Traffic-aware routing is the process of choosing a route based on current and predicted road conditions- not simply distance or the usual fastest path. By factoring in congestion, incidents, closures, and typical traffic patterns, it helps drivers, delivery teams, and mobility businesses make better travel decisions. A route that looks shortest on a map is […] The post Traffic-Aware Routing: How…
A physical layer coding violation occurs when a network interface receives a signal pattern that is invalid under the encoding scheme in use. In plain English, the device sees a sequence of electrical or optical symbols that it cannot translate into legitimate data, control, or idle information. These errors sit at Layer 1 of the […] The post Physical Layer Coding Violation: Causes, Detection, and…
Virtual circuit packet switching is a networking method in which a logical route is established between two endpoints before data packets begin to flow. Each packet still travels separately, but it follows the same prearranged path and carries a short virtual-circuit identifier rather than the full destination address at every hop. This approach combines the […] The post Virtual Circuit Packet…
The Stream Control Transmission Protocol (SCTP) is a transport-layer protocol designed to send application messages reliably while overcoming a few well-known limitations of TCP. It combines dependable delivery and congestion control with two distinguishing capabilities: multistreaming and multihoming. Put simply, SCTP lets one connection-like relationship carry several independent message streams…
Attenuation distortion occurs when different frequency components of a signal lose different amounts of strength as they travel through a transmission path. Instead of reaching the receiver at a uniform level, some frequencies arrive weaker than others. The result is a signal whose shape, quality, or intelligibility has changed. It is an important concept in […] The post Attenuation Distortion:…
Encapsulating Security Payload (ESP) is the IPsec protocol that helps secure data as it travels across IP networks. Commonly used in VPNs, ESP can encrypt packet contents, verify their integrity, authenticate their origin, and help block replay attacks. In plain terms, ESP wraps sensitive network traffic in a protected packet so that attackers who intercept […] The post Encapsulating Security…
An authentication header is an HTTP request header that provides credentials or a token to prove a client is allowed to access a protected resource. It is a core part of API security, allowing applications, browsers, mobile apps, and backend services to identify themselves when calling an endpoint. In simple terms, the client includes authentication […] The post Authentication Header: What It Is…
Communication is the foundation of every computer network. Whether you send an email, load a website, make a video call, or transfer a file, data must travel from one device to another in an organized and reliable way. This process is described by the basic communication model in computer networking. At its core, the model […] The post Basic Communication Model in Computer Networking: Components,…
