What is a router?
A router is a networking device that connects two or more IP networks or subnetworks and connects various networked nodes. What is a router? A router is a device that…
What is a network switch? | Switch vs. router
A network switch forwards data packets between devices. Switches send packets directly to devices; it differs network traffic from a router. What is the difference between a switch and a…
What is the network layer? | Network vs. Internet layer
The network layer is layer 3 in the OSI model, responsible for connections between different networks. What is the network layer? Network-to-network connections are what make the Internet possible. The…
Protocols, How They Work, Use Cases
Simple but effective “cheat sheet” on internet/networking protocols, simple examples of how they work, and use case scenarios for how a protocol would typically be used.
NTP amplification DDoS attack
A volumetric DDoS attack that takes advantage of a vulnerability in the NTP protocol, flooding a server with UDP traffic. What is a NTP amplification attack? An NTP amplification attack…
What is a DNS flood? | DNS flood DDoS attack
A DNS flood is a DDoS attack that aims to flood and overwhelm a target DNS server. What is a DNS Flood? Domain Name System (DNS) servers are the “phonebooks”…
CDN reliability and redundancy
A CDN is designed to circumvent network congestion and protect against service interruption. CDN benefits – reliability & redundancy One of the essential characteristics of a CDN is its ability…
What is Anycast? | How does Anycast work?
Anycast is a network addressing and routing method in which incoming requests can be routed to various locations. What is Anycast? Anycast is a network addressing and routing method in…
Infrastructure: Definition, Meaning, and Examples
What Is Infrastructure? Infrastructure is defined as the basic physical systems of a business, region, or nation and often involves the production of public goods or production processes. Examples of…
What is a reverse proxy? | Proxy servers explained
A reverse proxy protects web servers from attacks and can provide performance and reliability benefits. Learn more about forward and reverse proxies. What is a proxy server? A forward proxy,…