What is WireGuard Protocol? What is it used for? Explained

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WireGuard is a new VPN protocol that promises better security and faster speeds. We examine how WireGuard protocol works and whether it lives up to the hype.

A Virtual Private Network (VPN) allows users to securely access resources over public networks such as the Internet.

In addition to providing secure communications between two endpoints, VPNs also provide security features such as encryption, authentication, and authorization.

WireGuard is a new protocol developed by Google engineers specifically designed to replace OpenVPN. It offers many advantages over OpenVPN, including faster speeds, lower latency, and less overhead.

WireGuard is open source and has already gained popularity among developers who prefer its simplicity and speed. This makes it perfect for small businesses looking to get started with VPN services.

This article will help you understand how WireGuard works and why it is becoming increasingly popular.

What is WireGuard?

What is WireGuard

WireGuard is a free, open-source network virtualization protocol developed by Andrew Tridgell in 2013. It provides security guarantees against some classes of attacks while retaining compatibility with existing software such as OpenSSH.

It uses UDP port number 18081 for communication within the VPN tunnel. This makes it easy to implement without requiring changes to applications or operating systems.

The protocol is designed to provide strong encryption, authentication, and confidentiality properties. It does so by providing endpoints with cryptographic keys rather than relying on pre-shared secrets.

Endpoints communicate directly with each other over a public key cryptosystem, avoiding intermediary servers. As a result, there is no single point of failure and no single point of compromise.

WireGuard offers additional features, including tunneling IPv4 traffic over IPsec tunnels, support for multiple simultaneous connections, per-connection stateless data compression, and optional replay protection.

In addition to being used as a replacement for OpenVPN, WireGuard is often used as a drop-in replacement for IPsec.

Benefits of using WireGuard

WireGuard is a new type of VPN designed from the ground up with security in mind. It uses the latest encryption technologies to provide a secure and private connection between two points.

WireGuard is also incredibly easy to use, making it a great choice for those looking for a simple and effective VPN solution.

While many VPN providers offer similar features, WireGuard is unique in that it doesn’t require any configuration on the user’s part, making it easy to set up and use.

WireGuard is also extremely safe, offering strong encryption and authentication, allowing you to access sensitive information while traveling abroad safely.

In addition, it’s open source, meaning anyone can audit the code and ensure that no malicious changes have been added. This makes it safer than other protocols, such as IKEv2, which many popular VPN solutions use today.

There are many benefits to using WireGuard, including the following:

1. Increased security and Improved privacy

WireGuard uses cutting-edge encryption technologies to keep your data safe and secure. This means that your data is less likely to be intercepted or hacked by third parties.

The protocol provides many important features for secure connections, including forward secrecy, perfect forward secrecy, privacy extensions, and support for UDP traffic.

These features make WireGuard a good choice for applications like remote access VPNs, where high performance isn’t critical, and security is paramount.

WireGuard encrypts your traffic, making it difficult for your ISP or government to snoop on your activities. This is particularly useful if you are using public WiFi hotspots.

2. Reliable and stable

WireGuard is a free software project developed by Mike Perry and others. In contrast to traditional VPN protocols such as OpenVPN, it uses UDP encapsulation rather than TCP/IP. This makes it faster and less resource-intensive while still providing strong security.

The protocol itself is designed to be reliable and resilient. Its developers emphasize stability over speed and are willing to sacrifice some performance to achieve better reliability. They have been known to work around bugs found in Linux kernel versions to ensure continued operation.

In addition to being fast, WireGuard provides good security. Like IPsec, it encrypts traffic between peers.

Unlike IPSec, however, it does not use public key cryptography. Instead, it relies on symmetric encryption keys.

These keys are generated randomly by each peer and never shared with anyone else. Even if one side of the connection is compromised, the other end cannot decrypt the data sent.

3. Faster speeds

WireGuard uses UDP rather than TCP, making it much faster in contrast to protocols like IPSec and PPTP

And unlike IPsec, the WireGuard protocol doesn’t require a third-party certificate authority to sign keys, meaning you don’t need to trust anyone else to secure your connection. This makes WireGuard ideal for use over untrusted networks like home WiFi.

In addition to being fast, WireGuard provides some additional features. For example, it supports multiple simultaneous connections, allowing you to connect to different remote hosts without manually configuring each one.

You can even set up automatic reconnection if the host disconnects unexpectedly.

4. Easy to use

The WireGuard project is one of the most exciting developments in privacy technology since Tor came onto the scene. Its simple design makes it easy to adopt, use, and understand.

The WireGuard team says that anyone can run a server within minutes. They are working hard to ensure that every aspect of the protocol is secure and that the codebase is kept small enough to ensure that no single vulnerability could compromise the entire system.

WireGuard uses UDP packets over IPsec connections to encrypt data and keep it safe while traveling across the Internet.

This allows the network to be completely decentralized, meaning no central authority could be compromised.

Because of this, the WireGuard protocol is resistant to censorship and blockades. The developers say that the protocol is designed to be extremely efficient, consuming less energy than VPN protocols like OpenVPN.

5. Cross-platform support

WireGuard works on many devices, including Windows, macOS, Linux, Android, and iOS.

If you are looking for a secure and private VPN solution, WireGuard is worth considering. It offers a great combination of security, privacy, and speed.

Why is WireGuard important?

WireGuard is a relatively new protocol that replaces IPsec/IKEv2 and OpenVPN. This makes it much simpler to set up and use than older protocols. WireGuard is easy to set up and use – even for those without a technical background.

WireGuard is based on stateful packet inspection; meaning packets aren’t encrypted until they reach the destination host.

This allows the WireGuard developers to implement strict policies around what traffic gets through. For example, you can limit bandwidth usage, block certain ports, and allow specific applications while blocking others.

You can also easily add rules for how long a connection lasts and whether or not it needs to reconnect.

The core idea behind WireGuard is to provide a secure tunneling solution that is simple to set up and understand. By providing a small footprint, WireGuard can run on low-powered hardware such as routers, servers, laptops, phones, etc.

Top WireGuard VPN providers include NordVPN, Private Internet Access, Mullvad, VyprVPN, ExpressVPN, PureVPN, and CyberGhost.

How does WireGuard’s cryptography work?

How WireGuard protocol work

WireGuard is a free and open-source project whose goal is to provide secure tunnels over UDP/IPv4 networks while being simple enough to use without requiring much security knowledge.

The WireGuard protocol builds upon confidentiality, authentication, integrity, and data origin verification concepts. Unlike IPSec, it doesn’t require any pre-shared secrets, such as certificates or RSA keys, and it offers no support for tunneling protocols like GRE or L2TP.

Instead, WireGuard relies solely on cryptographic primitives that are widely considered safe and trustworthy. These include AES-256 GCM, Curve25519 ECDH, BLAKE2b, ChaCha20-Poly1305, HMAC-SHA256, HKDF-Expand, MD5, RIPEMD160, SHA-512 and Whirlpool.

It also uses a custom hash function called “noise,” designed to resist quantum computing. This hash function combines several subfunctions into one large hash value, making it harder to break even if multiple subfunctions are broken.

In addition, WireGuard implements a form of end-to-end authenticated encryption known as “deterministic key exchange.” This allows both ends of a connection to securely agree on a shared secret, regardless of what happens to either side during transmission.

This approach makes it possible to build highly efficient network connections immune to man-in-the-middle attacks.

Finally, unlike many VPN protocols, WireGuard supports fast handshakes with minimal overhead. This is achieved using a novel handshake algorithm called “Noise,” based on the Noise Framework.

Is WireGuard better than other protocols?

WireGuard is a new protocol for creating secure connections over IP networks. Like OpenVPN, it encrypts traffic and provides authentication.

Unlike OpenVPN, it does not require a server. Instead, it relies on a client/server model where both parties are responsible for setting up the connection.

The WireGuard project began in 2016 and grew out of frustration with existing VPN solutions.

In particular, developers wanted something like OpenVPN without some of the limitations associated with that software. They wanted something fast, easy to use, and completely decentralized.

WireGuard is used primarily for connecting devices, such as routers and servers. However, it could also be useful for establishing connections between endpoints on the same network.

For example, you might want to connect your laptop to your home router without exposing yourself to the rest of the internet. Or maybe you just want to ensure that no one else is reading your email while you’re working remotely.

In terms of speed, WireGuard is much faster than most VPN clients. This is because it doesn’t rely on TCP sockets, which are slower than UDP.

Because there’s no central server to maintain state information, it doesn’t suffer from the problems caused by a centralized system. And since it’s implemented directly into the Linux kernel, it’s very efficient.

Although it’s still early, WireGuard has already been adopted by several major projects. These include Tor, I2P, and Freenet. It’s also being developed into the core of the Linux networking stack. There are even plans to integrate it into Android.

WireGuard vs. OpenVPN

OpenVPN and WireGuard are encrypted VPN protocols that let people securely connect to remote networks over public internet connections.

However, while OpenVPN uses standard IP packets, WireGuard uses custom UDP packets that offer better performance and security.

In our tests, WireGuard was consistently faster than OpenVPN, even though it required slightly more work to configure.

We tested the performance of each protocol on Windows 10 laptops running on Wi-Fi and Ethernet connections. We used the same laptop to run both protocols simultaneously to ensure we weren’t testing something else.

We ran several different benchmarks to compare the performance of the two protocols. For example, we measured how long each protocol took to establish a secure connection with a server.

In addition, we timed how long it took each one to download a file of around 3GB. Finally, we compared the amount of power consumed by each protocol.

The results showed that WireGuard performed considerably better than OpenVPN. On average, WireGuard established a secure connection in just 0.3 seconds, whereas OpenVPN took 2.4 seconds.

Similarly, WireGuard downloaded a file in 2 minutes and 12 seconds versus 5 minutes and 19 seconds for OpenVPN. Lastly, WireGuard consumed about half the power of OpenVPN.

WireGuard vs. IPSec/IKEv2

IPSec is a relatively old protocol developed in 1991. In comparison, WireGuard is newer, having been introduced in 2016.

Both protocols are used to secure communications over IP networks. They’re both considered “tunneling” technologies because they use encryption to hide traffic within another application.

WireGuard offers some benefits over IPSec. First, WireGuard uses fewer resources than IPSec.

Second, WireGuard is designed to run natively on embedded systems without requiring special software. Third, WireGuard is part of the Linux kernel, making it easier to deploy.

The downside to WireGuard is that it requires extra configuration and setup. You’ll need to download and compile the source code. Once configured, you won’t need to do anything else to make it work.

Another advantage of WireGuard is that it provides better performance than IPSec. A benchmark conducted by Cloudflare showed that WireGuard performed much faster than IPSec. This could be important in certain situations.

How to easily configure WireGuard clients

WireGuard is one of the most popular open-source virtual private network (VPN) apps, and it’s easy to set up.

But if you want to use it with multiple computers, you might run into some trouble. You can either copy the certificate files manually, type in the relevant information, or download a QR code and scan it.

Instead of doing anything, you can simply scan a QR code from within the WireGuard app itself. From there, you can select “Create from QR Code” and enter the URL of the site where you got the code.

You can even add notes about what you did to generate the code. Once you do that, you can connect to the remote device.

You can save the configuration file to ensure you don’t forget anything. This makes it easier to switch configurations later on.

Which VPNs support WireGuard?

WireGuard is a new VPN protocol quickly gaining popularity due to its security and performance. Many VPN providers are now supporting WireGuard, but not all of them. In this article, we will look at which VPN providers support WireGuard.

WireGuard is a VPN protocol that uses state-of-the-art cryptography to provide a secure and fast connection.

It is designed to be simple and easy to use while still providing a high level of security. WireGuard is already supported by many major Linux distributions and has been included in the Linux kernel since version 5.6.

One of the biggest benefits of WireGuard is its performance. WireGuard can achieve much higher speeds than other VPN protocols due to its efficient design.

Another benefit of WireGuard is its security. WireGuard uses state-of-the-art cryptography, which is constantly being improved. This makes it one of the most secure VPN protocols available.

WireGuard is also very easy to use. The WireGuard client is available for all major platforms and is easily set up.

VPN providers that support WireGuard

Many VPN providers now support WireGuard. Here are some of the most popular ones:


ExpressVPN is one of the most popular VPN providers and offers support for WireGuard. ExpressVPN has servers in 94 countries and offers a 30-day money-back guarantee.

ExpressVPN is known for its fast speeds and features, making it a great choice for WireGuard users.


NordVPN is another popular VPN provider that offers support for WireGuard. NordVPN has servers in 59 countries and offers a 30-day money-back guarantee.

NordVPN has a strong focus on security and privacy and offers many features that make it a great choice for WireGuard users. NordVPN is one of the few VPN providers offering a free trial.


Surfshark is a newer VPN provider that offers support for WireGuard. Surfshark has servers in 61 countries and offers a 30-day money-back guarantee.

It’s a fast, reliable, and affordable service with a great selection of features. Surfshark is one of the few WireGuard-compatible VPNs offering a free trial.


VyprVPN is another popular VPN provider that offers support for WireGuard. VyprVPN has servers in 70 countries and offers a 3-day free trial.


PrivateVPN is a smaller VPN provider that offers support for WireGuard. PrivateVPN has servers in 56 countries and offers a 30-day money-back guarantee.

Which VPN provider is the best for WireGuard?

Many great VPN providers offer support for WireGuard. If you are looking for a VPN provider that offers the best combination of security, performance, and price, then we recommend ExpressVPN.

If you are looking for a VPN provider that offers the best combination of security, performance, and price, then we recommend ExpressVPN.

What port does WireGuard use?

WireGuard uses UDP port 51820 by default. This allows it to work on most platforms without special configuration.

However, you can change the port to anything above 1024. If you do, open up the correct ports on your firewall.

Is WireGuard better than OpenVPN?

WireGuard is a VPN protocol developed by Jason Donenfeld, a researcher in network security.

He started developing it because he wanted to secure his home networks without relying on third parties like large ISPs.

It works by encrypting each packet sent over the wire, which makes it very difficult to intercept traffic and read information about what you are doing online. This is why it is considered much safer than open protocols like OpenVPN.

You can use WireGuard on Linux, macOS, Windows, Android, iOS, FreeBSD, NetBSD, OpenBSD, DragonFly BSD, and many others. You can even run it on embedded devices like routers. No client software is needed; install it on both ends of the connection.

Is WireGuard multithreaded?

WireGuard is a fast VPN protocol developed by Matthew Garrett. It offers a high throughput and low latency compared to OpenVPN and IPsec protocols.

But it doesn’t use TCP as OpenVPN does. Instead, it uses UDP, a faster transport layer protocol. This makes it possible to run Wireguard over a single LAN segment without using multicast groups to send traffic across multiple segments.

However, there are some drawbacks to running WireGuard over a single segment. One problem is that the packets sent by one host must wait for another host to finish sending data before they can start sending themselves.

If you want to speed up things, you could add multiple hosts to a single segment. However, each host must know how many others are attached to the same segment.

The good news is that WireGuard has been designed to scale well. So even though you might have just a few hosts on a single segment, you can still benefit from multithreading.

The developers claim WireGuard is already multithreaded because it uses a packet coalescing technique.

This means that the packets sent by each host don’t arrive at the destination until they’ve been merged together into larger chunks.

When the packets come out of the ethernet interface, they are split into smaller pieces. Each piece is given a unique identifier, such as a MAC address. Then, those identifiers are put together again, creating bigger chunks of data. Finally, the packets are sent off to the next device.

When this process happens, it creates a lot of overhead. For example, it takes about ten milliseconds per packet to merge. And since we’re talking about Ethernet here, each packet needs to travel about 150 meters before it reaches its final destination.

That’s why the WireGuard developers implemented multithreading. They say that it allows the protocol to accelerate by a factor of four, resulting in a total runtime improvement of 20x.

Is WireGuard safe for torrenting?

WireGuard is one of the most popular VPN protocols out there today. Its popularity is due to its simplicity and ease of use. However, some people are concerned about whether it is secure enough for torrenting.

WireGuard does provide encryption and authentication features that make it suitable for torrenting. You don’t need to enable the kill switch because you’re already protected by default.

However, keep in mind that enabling the kill switch and exercising general precautions is just as important as your tunnel protocol choices regarding privacy concerns, especially if you want to protect yourself against government surveillance.


WireGuard is a VPN protocol that offers many advantages over other protocols. It is more secure and efficient, and it offers better performance. WireGuard is the future of VPNs and is already available on many platforms.