---
title: "What is a VPN? A Complete Guide"
url: "https://astraguardvpn.com/what-is-a-vpn"
description: "Learn what a VPN is, how it works, and why you need one. Complete beginner's guide to Virtual Private Networks from AstraGuardVPN."
---

# What is a VPN? A Complete Guide

A VPN (Virtual Private Network) is a service that encrypts your internet connection and hides your IP address, protecting your privacy online.

## Why people use a VPN

Common reasons include private browsing on public Wi-Fi, reducing ISP tracking, accessing work resources remotely, and protecting devices on untrusted networks.

## How AstraGuardVPN helps

AstraGuardVPN applies AES-256 encryption, supports OpenVPN, and includes kill switch and DNS leak protection across major platforms.

## VPN vs Proxy vs Tor

A VPN encrypts all device traffic and hides your IP. A proxy usually covers one app and often does not encrypt. Tor encrypts and anonymizes via relays but is typically browser-only and slower.

## Steps

1. **Understand VPN basics** — A VPN creates an encrypted tunnel between your device and a remote server, hiding your IP address and encrypting all traffic.
2. **Choose a VPN provider** — Select a VPN with strong encryption (AES-256), a kill switch, DNS leak protection, and servers in locations you need.
3. **Install the VPN app** — Download and install the VPN app on your device — available for Windows, macOS, iOS, Android, and Linux.
4. **Connect to a server** — Open the app, select a server location, and tap Connect. Your traffic is now encrypted and your IP masked.

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