VPN Protocols Explained
VPN protocols determine how your data is encrypted and transmitted. Different protocols offer different trade-offs between speed, security, and compatibility.
WireGuard
WireGuard is the newest protocol, offering excellent speed and modern cryptography. It uses only 4,000 lines of code (vs 400,000+ for OpenVPN), making it easier to audit. Most VPNs now offer WireGuard or a proprietary version (NordLynx, Lightway).
OpenVPN
OpenVPN is the industry standard, battle-tested over 20 years. It offers excellent security and works on nearly any platform. However, it can be slower than WireGuard and requires more resources.
IKEv2/IPSec
IKEv2 is excellent for mobile devices due to its ability to quickly reconnect when switching networks. It offers good speed and security but is less flexible than OpenVPN.
Which Should You Use?
For most users, WireGuard offers the best balance of speed and security. Use OpenVPN if you need maximum compatibility or are on restrictive networks. IKEv2 is ideal for mobile users who frequently switch between WiFi and cellular.
Key Takeaways
- •WireGuard is fastest and uses modern cryptography
- •OpenVPN is most compatible and battle-tested
- •IKEv2 is best for mobile devices
- •All three protocols offer strong security when properly implemented
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