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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

Bandwidth
The maximum rate of data transfer across a network connection, measured in bits per second.
ICMP (Internet Control Message Protocol)
A network protocol used for diagnostic and error reporting, including ping and traceroute functionality.
DHCP
A protocol that automatically assigns IP addresses and network configuration to devices on a network.
VLAN (Virtual LAN)
A logical grouping of network devices that creates separate broadcast domains on the same physical network infrastructure.
HTTP Keep-Alive
An HTTP mechanism that reuses a single TCP connection for multiple requests, reducing the overhead of establishing new connections.
NAT (Network Address Translation)
A method of mapping private IP addresses to public IP addresses, allowing multiple devices to share a single public IP.
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