which vpn protocol is best

A VPN protocol determines how the VPN functions, affecting its speed, security, and compatibility with devices. With numerous VPN protocols available, picking the best one can be overwhelming for users who are unfamiliar with each protocol’s strengths and weaknesses.

Some of the widely used VPN protocols include OpenVPN, L2TP/IPSec, PPTP, SSTP, IKEv2/IPSec, and the newer WireGuard. Each protocol comes with its unique advantages and limitations regarding speed, security, performance, and compatibility with different operating systems. Depending on your needs and preferences, the best VPN protocol for you might vary, and a well-informed choice will help optimize your VPN experience for speed, security, and privacy.

Key Takeaways

  • VPN protocols play a major role in determining a VPN’s speed, security, and device compatibility.
  • Common VPN protocols include OpenVPN, L2TP/IPSec, PPTP, SSTP, IKEv2/IPSec, and WireGuard.
  • The best VPN protocol for a user depends on individual preferences and specific use cases.


OpenVPN is a popular and widely-used VPN protocol. It is open-source, which means that the community can contribute to its development and check for security issues. This protocol operates at the transport layer and is based on the SSL/TLS protocol, utilizing the OpenSSL library for encryption and authentication.

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One of the reasons OpenVPN is considered a top choice for VPN users is its support for both UDP and TCP communication. While UDP is faster, it may suffer from packet loss and increased latency in some cases. On the other hand, TCP is more reliable but comparatively slower. OpenVPN allows users to choose between these two options depending on their needs.

One potential downside to OpenVPN may be its complexity and the need for manual configuration on some devices. However, numerous VPN server providers offer easy-to-use applications that come pre-configured with OpenVPN settings.


L2TP/IPSec is a combination of the Layer 2 Tunneling Protocol (L2TP) and Internet Protocol Security (IPsec). This VPN protocol is widely used due to its high security and compatibility with various devices and operating systems.

L2TP itself does not provide encryption or confidentiality; that’s where IPsec comes in. IPsec adds an extra layer of security by encrypting the data transmitted over the L2TP tunnel. It uses strong encryption algorithms, such as 3DES and AES, to safeguard data and maintain privacy.

One of the advantages of L2TP/IPSec is its ability to bypass firewalls, as it uses UDP port 500, making it less likely to be blocked. This protocol is also easy to set up on most devices and is supported by a wide range of operating systems, including Windows, macOS, Linux, Android, and iOS.

However, L2TP/IPSec is not without its limitations. This VPN protocol might suffer from slower speeds compared to newer protocols like WireGuard or OpenVPN due to its double encapsulation process. This means that data packets are wrapped twice, once by L2TP and then by IPsec, which adds to the processing time.

When comparing VPN protocols, L2TP/IPSec stands out for its compatibility and ability to bypass firewalls. However, it may not be the fastest option available. As you evaluate different protocols, consider your specific security needs and connection speed requirements to make the best choice.


Point-to-Point Tunneling Protocol (PPTP) is an older VPN protocol that was initially developed with support from Microsoft. It is widely supported across various operating systems, including all versions of Windows. PPTP uses the Point-to-Point Protocol (PPP) which can be considered a proto-VPN in itself1.

When it comes to encryption, PPTP relies on the Microsoft Point-to-Point Encryption (MPPE) protocol to secure data transmission. MPPE provides data confidentiality but lacks data integrity and authentication2. This means that, while PPTP can hide your data from prying eyes, it may not be as secure as other VPN protocols when it comes to ensuring data has not been tampered with.

On the other hand, PPTP has an advantage when it comes to connection speed. Due to its lower encryption overhead, PPTP connections are generally faster and require fewer resources compared to other VPN protocols4. This could make PPTP more suitable for use cases where speed is a priority over security, such as streaming or gaming.

SSTP and IKEv2/IPSec

SSTP, or Secure Socket Tunneling Protocol, is a VPN protocol developed by Microsoft. It is commonly used by Windows operating systems and is integrated into Windows Vista SP1 and later versions. SSTP provides a secure connection using SSL/TLS encryption, which is considered robust and reliable. This protocol works well with firewalls as it uses the same port as HTTPS traffic, making it difficult to be blocked or detected by network administrators. However, due to its proprietary nature and association with Microsoft, some users may be skeptical about trusting it for their security needs.

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IKEv2/IPSec, short for Internet Key Exchange version 2 and Internet Protocol Security, is another VPN protocol that offers strong encryption and security. Both IKEv2 and IPSec work together to provide a secure tunnel for data to travel through. IKEv2 is responsible for establishing and maintaining the connection, while IPSec is used for the actual encryption and data transfer. This combination makes IKEv2/IPSec a highly secure option for VPN users.

Compared to SSTP, IKEv2/IPSec has a few advantages. First, it offers faster connection speeds due to its ability to maintain connections even when the network is unstable or switches between different connections (called “mobility support”). Additionally, IKEv2/IPSec is not limited to Windows devices, as it is supported on a wide range of platforms, including macOS, iOS, Android, and Linux.

While both SSTP and IKEv2/IPSec have their advantages and drawbacks, they both offer robust encryption and secure connections. Users should carefully consider their specific needs and requirements when choosing between these two VPN protocols.


WireGuard is a relatively new, open-source VPN protocol that has gained popularity due to its simplicity and performance. It was specifically designed to be easy to implement and maintain, making it an attractive option for VPN providers and users alike.

One of the key features of WireGuard is its strong encryption and security. It utilizes modern cryptographic primitives, such as ChaCha20, Poly1305, and Curve25519, to provide a high level of security without compromising on speed. Additionally, the protocol is built to reduce potential attack surfaces, making it more secure than some older VPN protocols.

Unlike some other VPN protocols, WireGuard operates in a single kernel module, resulting in a lightweight and efficient implementation. This leads to better performance and lower latency, which is particularly beneficial for users on slow or unreliable internet connections.

WireGuard is primarily designed for use on Linux-based systems, but it has been successfully ported to other platforms, including Windows, macOS, Android, and iOS. The protocol’s open-source nature has made it possible for developers to create and maintain implementations on various platforms, further expanding its reach and adoption.

In terms of compatibility with VPN servers, WireGuard can be easily integrated into existing VPN infrastructure. Many VPN providers have already adopted this protocol, offering support alongside other established protocols like OpenVPN.

While WireGuard has many advantages, it’s important to note that it is still a relatively new protocol, and some features may still be under development or improvement. However, its strong security, performance, and open-source nature make it a promising option for users seeking a secure, high-performing VPN experience.

Comparing Speed and Performance

When it comes to speed and performance, there are several VPN protocols that we need to consider. The most common VPN protocols are OpenVPN, L2TP/IPsec, PPTP, SSTP, IKEv2, and WireGuard. Each protocol has its unique features and characteristics that may influence its efficiency in different situations.

OpenVPN is known for its balance between security and speed. It uses the open-source OpenSSL library for encryption, providing strong security and good performance. However, it has moderate overhead, which may affect speed in some network conditions.

L2TP/IPsec offers decent security and moderate speed, but it has a double layer of encapsulation, resulting in a higher overhead and slightly slower performance than other protocols like OpenVPN.

PPTP is an old VPN protocol, and its security is questionable, making it not recommended for use. However, due to its low overhead, it provides faster speeds than some other protocols, but at the expense of security.

SSTP, a Windows-proprietary protocol, is considered to have good security and performance features, making it a solid choice for Windows users. Its performance is similar to that of OpenVPN, but being a proprietary technology, its compatibility with other platforms is limited.

IKEv2 is known for its fast connection times and good performance in network-switching situations (like moving from Wi-Fi to mobile data). Its security is considered strong, making it a popular choice among mobile users who prioritize speed.

WireGuard is the newest VPN protocol, boasting an innovative design that makes it lightweight and extraordinarily fast. It has minimal overhead, which translates to better speeds and performance for online gaming, video streaming, and downloading large files.

While comparing these different protocols, it’s necessary to consider the intended usage, platform, and specific network conditions, as each protocol may perform differently in various situations.

Security and Privacy Concerns

When choosing a VPN protocol, security and privacy should be a top priority. Several VPN protocols offer varying degrees of protection, but it’s essential to understand their strengths and weaknesses to make an informed decision.

OpenVPN is widely considered the most secure VPN protocol. It supports a range of encryption ciphers such as AES-256, Blowfish, and ChaCha20. With no known vulnerabilities and native support from almost every VPN service, OpenVPN is a reliable choice for those concerned about privacy.

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WireGuard is a newer protocol that offers both security and speed. It has garnered attention for its excellent performance, while still offering robust protection. Many top-tier VPN providers, such as NordVPN (with their NordLynx protocol), have started incorporating WireGuard into their services.

Secure Socket Tunneling Protocol (SSTP) is another VPN protocol focused on security and privacy. Developed by Microsoft, SSTP uses SSL/TLS encryption, making it effective at bypassing firewalls. While it can be a good option for users on Windows platforms, it may not be the best choice for everyone due to its limited compatibility with other operating systems.

Layer 2 Tunneling Protocol (L2TP)/IPSec was co-developed by Microsoft and Cisco and is widely used in the VPN industry. L2TP/IPSec is considered secure, but there are concerns about potential backdoors due to its development involving the NSA. This connection to the NSA raises questions about the protocol’s true privacy protection.

Frequently Asked Questions

What is the most secure VPN protocol?

OpenVPN is widely considered the most secure VPN protocol. It uses 256-bit AES encryption and supports Perfect Forward Secrecy, ensuring that previous encryption keys cannot decrypt current session data. OpenVPN is also highly configurable, making it adaptable to various security requirements.

Which VPN protocol offers the fastest connection?

WireGuard is known for its fast connection speeds. It is a modern protocol designed to be simple, lightweight, and efficient, resulting in a faster and more stable connection compared to older protocols.

What is the best VPN protocol for Android devices?

IKEv2 is often recommended for Android devices due to its compatibility, stability, and performance. However, newer protocols like WireGuard are gaining popularity because of their simplicity, lightweight design, and impressive connection speeds. Deciding between IKEv2 and WireGuard depends on individual requirements and available options from your VPN provider.

Which VPN protocol should be used for streaming?

When it comes to streaming, connection speed, stability, and low latency are crucial. Therefore, choosing a protocol like WireGuard or IKEv2 may be your best bet. Both protocols offer fast data transmission and are better suited for streaming compared to older protocols like PPTP or L2TP. Ultimately, your choice will depend on your specific use case and the protocols supported by your VPN service.


  1. ProtonVPN Blog

  2. TechRadar

  3. HowToGeek

  4. TechRadar

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