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Networking Beginner

What is VPN (Virtual Private Network)?

A technology that creates an encrypted tunnel between your device and a remote server, securing internet traffic.

VPNs encrypt all network traffic between your device and the VPN server, protecting data on public networks and masking your IP address. Protocols include OpenVPN, WireGuard, IPSec, and L2TP.

Use cases include remote work access, bypassing geographic restrictions, privacy protection, and securing public Wi-Fi connections. Enterprise VPNs connect branch offices to central networks.

Related Terms

Proxy Server
An intermediary server that forwards requests between clients and destination servers, providing caching, filtering, or anonymity.
OSI Model
The seven-layer Open Systems Interconnection model that standardizes network communication functions from physical transmission to application protocols.
Subnet
A logical division of an IP network into smaller segments to improve performance, security, and management.
HTTP Keep-Alive
An HTTP mechanism that reuses a single TCP connection for multiple requests, reducing the overhead of establishing new connections.
Network Segmentation
The practice of dividing a network into isolated segments to improve security, performance, and management.
QoS (Quality of Service)
A set of techniques for managing network traffic to prioritize certain types of data and ensure performance for critical applications.
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