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VPN Glossary: 25 Terms Every User Should Know

Bolt VPN Team|2025-12-10
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VPN Glossary: 25 Terms Every User Should Know

VPN Terminology Explained

Understanding VPN terminology helps you make better decisions about your online security.

Essential Terms

AES (Advanced Encryption Standard)

The gold standard encryption algorithm used by governments and militaries worldwide. AES-256 is virtually uncrackable.

Bandwidth

The amount of data that can be transmitted in a given time period. VPNs may limit bandwidth on free plans.

DNS (Domain Name System)

Translates website names to IP addresses. DNS leaks can expose your browsing even when using a VPN.

Encryption

The process of converting data into an unreadable format that can only be decoded with the correct key.

IP Address

A unique numerical identifier assigned to your device on the internet. VPNs mask your real IP.

Kill Switch

A feature that blocks internet access if your VPN connection drops, preventing data leaks.

Latency (Ping)

The delay between sending a request and receiving a response. Measured in milliseconds.

No-Log Policy

A VPN provider's commitment not to record your online activity.

OpenVPN

An open-source VPN protocol known for strong security and flexibility.

Protocol

The set of rules that determine how data is transmitted between your device and the VPN server.

Proxy

A server that acts as an intermediary but typically doesn't encrypt traffic like a VPN.

Server

A computer that provides VPN services. More servers usually mean better speeds and options.

Split Tunneling

Feature that lets you choose which apps use the VPN and which use your regular connection.

Throughput

The actual rate of data transfer you experience. Different from theoretical bandwidth.

VPN Tunnel

The encrypted connection between your device and the VPN server.

WebRTC Leak

A vulnerability that can expose your real IP address even when using a VPN.

WireGuard

A modern VPN protocol known for speed and simplicity. Used by Bolt VPN.

Using This Knowledge

Understanding these terms helps you:

  • Compare VPN services effectively
  • Configure your VPN properly
  • Troubleshoot connection issues
  • Make informed security decisions

Bolt VPN uses industry-leading technology to keep you safe. Download today.

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