WireGuard vs OpenVPN vs IKEv2 : Quel Protocole VPN Choisir ?

Behind every VPN connection lies a protocol — the set of rules that defines how data is encrypted and transmitted. Choosing the right protocol can make a real difference in terms of speed and security.

WireGuard — the next-generation protocol

WireGuard is the newest protocol and one of the highest-performing in 2026.

Advantages:

• Extremely lightweight codebase (about 4,000 lines versus 70,000 for OpenVPN)
• High speeds — up to 50% faster than OpenVPN in some tests
• Modern cryptography (Curve25519, ChaCha20)
• Fast connection
• Optimized battery usage on mobile

Disadvantages:

• Newer, so historically less audited than OpenVPN
• IP address handling to keep an eye on, depending on the provider's implementation

Recommended for: everyday use, video, mobile.

OpenVPN — the industry standard

OpenVPN has been the most widely used VPN protocol in the world for more than 15 years. Its proven reliability makes it a solid choice.

Advantages:

• Open source and audited by numerous independent experts
• Very secure (AES-256)
• Remains functional even in network environments with strict firewalls (useful for businesses)
• Compatible with most platforms

Disadvantages:

• Slower than WireGuard
• Setup sometimes more complex
• Uses more battery on mobile

Recommended for: maximum security, businesses, remote work.

IKEv2/IPSec — strong on mobile

IKEv2 is particularly well suited to mobile devices thanks to its automatic reconnection capability.

Advantages:

• Fast reconnection after a dropped connection
• Battery-efficient
• Fast on mobile
• Solid security

Disadvantages:

• Blocked by some restrictive firewalls
• Fewer configuration options

Recommended for: iPhone, iPad, heavy mobile use.

Comparison table

Our recommendation

PureVPN offers all three protocols and automatically selects an option suited to your connection. For most users in 2026, WireGuard is a good starting point.