What is VPN: a definition in simple terms
VPN (Virtual Private Network) is a technology that creates an encrypted connection between your device and a remote server. All data that you send and receive over the internet passes through this protected "tunnel", and outsiders cannot read its contents.
Imagine a regular internet connection as an open envelope. Anyone who intercepts the envelope can read the letter. VPN works like an armored envelope: even if it is intercepted, the contents remain unreadable.
The key property of a VPN is that it not only encrypts traffic but also masks your real IP address. Services and websites see the VPN server's IP, not your home or mobile address. This gives you two things at once: privacy and the ability to bypass geo-restrictions.
How VPN works: the mechanism
VPN operation is built on three basic principles: tunneling, encryption and routing through a remote server. Let's look at each of them.
1. Tunneling
When you connect to a VPN, your traffic does not go directly to the website or service. Instead, it is first sent to the VPN server over an encrypted channel — this is the "tunnel". The VPN server decrypts the data, sends it to the target site, receives the response and returns it to you over the same encrypted channel.
The tunnel operates at the network level. Your device creates a virtual network interface through which all traffic passes (or part of it, depending on the settings). For the operating system this looks like a regular network connection, only with a different gateway address.
2. Encryption
Every data packet passing through the tunnel is encrypted with a special algorithm. Even if someone intercepts a packet during transmission, they will only see a set of meaningless symbols. Only your device and the VPN server, which share a common key, can decrypt the data.
The strength of encryption depends on the protocol and algorithm. Modern VPN protocols use AES-256 encryption — the same standard used in banking and government systems. It is impossible to break such encryption by brute force: it would take longer than the universe has existed.
3. IP address change
When your traffic exits the VPN server, the site sees that server's IP address, not yours. For example, if the VPN server is located in Germany, any resource will think you are in Germany. This works both ways: you can access content available in another country and hide your real location from outside observers.
What a VPN is for: main tasks
A VPN solves several practical tasks, and they are not only about "hackers and spies". Here are the most common use cases.
Data protection in public networks
Wi-Fi in a café, airport, hotel or coworking space is convenient but dangerous. The administrator of such a network (and anyone connected to the same network) can theoretically intercept your traffic. With a VPN, all traffic is encrypted, and data interception becomes pointless.
Bypassing blocks
Many services and websites restrict access on a geographic basis. A VPN lets you connect through a server in the right region and access a resource as if you were in that country.
Keeping your privacy
Your ISP sees all the sites you visit. Ad networks build profiles based on your online behavior. A VPN hides your activity from your ISP and prevents ad systems from linking that activity to your real IP.
Secure remote work
Many companies require employees to connect to the corporate network via VPN. This ensures that access to internal resources goes through a secure channel rather than the open internet.
Working from abroad
For Russian-speaking users outside Russia, a VPN becomes a way to access services and content available only from certain regions. This applies to banking apps, government services and entertainment content alike.
Types of VPN
Not all VPNs are built the same. There are several types, and understanding the difference helps you choose the right solution.
Remote Access VPN
This is the most common type. You connect to a VPN server from your device — laptop, phone or tablet. All your data passes through an encrypted tunnel to the server, and from there — to the internet. This is the type of VPN used by most commercial services and corporate solutions.
Site-to-Site VPN
This type connects two or more local networks over the internet. For example, an office in Moscow and an office in Saint Petersburg can work as a single network thanks to a site-to-site VPN. Regular users do not encounter this type — it is enterprise level.
Personal VPN
This is essentially a variety of remote access, but with a focus on the individual user. You connect one device or several personal devices to a VPN server to protect your traffic. Commercial VPN services such as Plan B work exactly in this format.
VPN protocols: OpenVPN, WireGuard, AmneziaWG
A VPN protocol is a set of rules and algorithms by which your device and the server exchange data. The speed, security and stability of the connection depend on the protocol. Let's look at the three main protocols used today.
| Parameter | OpenVPN | WireGuard | AmneziaWG |
|---|---|---|---|
| Year of creation | 2001 | 2019 | 2023 |
| Lines of code | ~100,000 | ~4,000 | ~5,000 |
| Speed | Average | High | High |
| Encryption | AES-256 / Blowfish | ChaCha20, Curve25519 | ChaCha20, Curve25519 |
| Obfuscation | Partial (plugins) | None | Built-in |
| Resistance to blocks | Average | Low | High |
| Ease of setup | Complex | Simple | Simple |
| Codebase size | Large | Small | Small |
OpenVPN
A classic protocol, proven by time. Open source, broad support, flexible settings. The downsides are a relatively high CPU load, slower speed compared to WireGuard, and setup complexity for beginners. Also, OpenVPN runs over TCP or UDP, which makes it visible to DPI (deep packet inspection) — proxies and firewalls can block such a connection.
WireGuard
A modern protocol built from scratch. Its main advantage is speed. WireGuard uses modern cryptographic algorithms, has a minimal codebase and works 30-60% faster than OpenVPN. The downside — WireGuard has no built-in obfuscation. The protocol is easily recognized by DPI, and in a number of networks it is blocked.
AmneziaWG
A fork of WireGuard developed to bypass blocks. AmneziaWG keeps all the advantages of WireGuard — speed, simplicity, modern cryptography — and adds traffic obfuscation. Thanks to this, the VPN tunnel looks like ordinary HTTPS traffic to filtering systems. DPI cannot tell AmneziaWG apart from regular web traffic, which makes the protocol resistant to blocks.
What a VPN hides and what it does not hide
A VPN is a powerful tool, but it is not all-powerful. It's important to understand exactly what it protects and what remains vulnerable.
What a VPN hides
- Your real IP address — sites see the VPN server's IP
- Traffic from your ISP — your internet provider only sees encrypted packets
- Geolocation — to services, you are located in the region of the VPN server
- Browsing history — at the network level, your requests to sites are unreadable
- Data in open networks — even on unsecured Wi-Fi, your data is safe
What a VPN does not hide
- Activity in the browser — if you are logged into Google, Facebook or other services, they keep collecting data about your activity
- Cookies and device fingerprints — sites can identify you through a combination of browser parameters
- File downloads — if you downloaded a file and opened it, its contents are accessible to your system
- Real-time behavior — if you enter personal data on a site, it remains accessible to that site
Types of VPN servers and geography
The architecture of a VPN service determines how user traffic works. There are two main approaches.
Single server
The user connects to one server, and all traffic passes through it. This is a simple and fast scheme, but it has limitations: if the server is blocked, the connection is lost, and if the server is far away, speed drops due to latency.
Cascade architecture
A more advanced approach is to route traffic through a chain of servers. For example, traffic first goes to a server in Russia, then is forwarded to a server in Europe. This gives two advantages: increased security (no single server sees the full picture of your traffic) and resistance to blocks (if the first server is blocked, traffic still passes through the second).
Plan B uses exactly this cascade scheme: a server in Russia — a server in Europe. This ensures both stable access to Russian services and the ability to bypass restrictions for foreign content.
How to choose a VPN: what to pay attention to
When choosing a VPN service, you should evaluate several factors. Not all of them are equally important to every user, but the general checklist looks like this.
- Protocol — preference should be given to modern protocols with obfuscation (AmneziaWG). This ensures both speed and resistance to blocks.
- Privacy policy — the service should not keep logs of your activity. Check whether the provider promises no-logs and how well that is backed technically.
- Speed — a VPN always adds some latency, but a good service minimizes its impact. Servers in your region and a modern protocol are the key to high speed.
- Number of servers — the more servers and the more countries they cover, the more connection options you have.
- Ease of use — a convenient app or messenger integration (for example, a Telegram bot) makes life easier.
- Cost — a good VPN does not have to be expensive. There are quality solutions on the market at reasonable prices.
Common myths about VPN
VPN is surrounded by many misconceptions. Let's look at the most popular ones.
Myth: VPN makes you completely anonymous
A VPN masks your IP and encrypts traffic at the network level, but it does not eliminate all traces of your digital activity. If you log into your Google account through a VPN, Google still knows who you are. Full anonymity requires a comprehensive approach.
Myth: a free VPN is just as good as a paid one
Free VPN services make money by selling user data, through ads, or by limiting speed and traffic volume. A free VPN is often the opposite of why people install it: instead of protection, it becomes a source of data leaks.
Myth: a VPN significantly slows down the internet
Modern protocols such as WireGuard and AmneziaWG add minimal latency. In practice, the difference in speed for regular browsing and streaming is almost unnoticeable. The slowdown is more noticeable with high ping, for example, in online games.
Myth: VPN is only for those who hide something
Data protection in public networks, secure remote work, access to work resources from abroad — all of these are completely legitimate use cases. A VPN is a tool of digital hygiene, not exclusively a means of bypassing blocks.
VPN and the law
In most countries, using a VPN is completely legal. VPN technology is used by corporations, government agencies and millions of private users around the world. According to various analytical agencies, by 2026 hundreds of millions of people worldwide use VPN services.
It is important to distinguish between the technology itself and specific actions. A VPN is a tool. Using a VPN to access legal content, protect your data and work safely online is an absolutely normal practice that does not violate the law.
In a number of countries, there are restrictions on the use of VPNs or certain protocols, but the technology of traffic encryption in itself is not prohibited anywhere. Companies use VPNs to protect corporate data, banks use them to ensure the security of online transactions, and government agencies use them for secure information transfer. VPN is the de facto standard in information security.
How a VPN connection works: step by step
For a complete understanding, it is worth examining what exactly happens when you press "Connect" in a VPN app.
- Connection initialization. Your device sends a request to the VPN server, proposing encryption parameters and keys. If you use a modern protocol, this part happens in milliseconds.
- Key exchange. The device and server agree on a shared secret key that will be used to encrypt traffic. This process is called a handshake. In WireGuard and AmneziaWG it is implemented as fast as possible.
- Creating a virtual interface. A new network interface appears on your device — a virtual adapter through which all encrypted traffic passes. To the system, this looks like a regular network connection.
- Traffic routing. All network requests from your device are redirected through the virtual interface to the VPN server. The server decrypts them, sends them to the target sites and returns the responses back.
- Persistent connection. The VPN maintains an active connection with the server. If the connection drops, modern apps support auto-reconnect — traffic automatically returns to the encrypted tunnel.
This entire process is hidden from the user. You simply press a button, and within a few seconds you are working online through an encrypted channel. It is impossible to tell a VPN connection from a regular one by feel — the difference happens at the network level, not the interface level.
Who especially needs a VPN
Although a VPN is useful to everyone connected to the internet, there are categories of users for whom it becomes not just a convenience, but a necessity.
Freelancers and remote workers
Working from a café, coworking space or home, freelancers regularly connect to corporate servers, send files to clients and work with confidential data. Without a VPN, any of these processes is potentially vulnerable. Public Wi-Fi in a café is not a metaphor for a threat but a real risk: Man-in-the-Middle attacks are a common technique for intercepting data.
Russian speakers abroad
For Russian-speaking citizens outside Russia, a VPN becomes a bridge to services available only from certain regions. Banking apps, government services, Russian streaming platforms — all of this may be unavailable without a Russian IP address. A cascade architecture with a server in Russia solves this problem.
Users who value privacy
The collection of personal data has become the norm of the internet. Ad networks, analytics services, social platforms — all of them build detailed user profiles. A VPN does not completely eliminate this problem, but it removes one of the key elements of attribution — your IP address. Combined with a private DNS and tracker blockers, a VPN makes profiling significantly harder.
Journalists and human rights activists
For people whose work involves confidential information, a VPN is a mandatory tool. Traffic encryption and IP masking help protect sources, preserve anonymity when sending materials and secure communications.
Plan B: a modern VPN without the extras
If you are looking for a VPN that combines a modern protocol, easy connection and an honest privacy policy, take a look at Plan B.
Plan B uses the AmneziaWG protocol — an obfuscated fork of WireGuard that delivers high speed and resistance to blocks. The service architecture is built on a cascade scheme: your traffic passes through a server in Russia and then through a server in Europe. This means you get access to both Russian and international services without compromise.
- Activation in seconds — connect via a Telegram bot, without registration or forms
- No-logs policy — the service does not store data about your activity
- Modern protocol — AmneziaWG with built-in obfuscation
- Affordable price — from 49 ₽ per month
- Works on all devices — Windows, macOS, Linux, Android, iOS
A VPN has become as much a basic part of digital security as an antivirus or HTTPS. In a world where every internet connection is potentially vulnerable, encrypting your traffic is not a luxury but a necessity. Choose a modern protocol, a proven service and take care of your privacy today.