VPN协议是VPN服务的核心技术,决定了连接速度、安全性和兼容性。ProtonVPN支持多种主流协议,让用户可以根据不同需求选择最合适的协议。
VPN protocol is the core technology of VPN services, determining connection speed, security and compatibility. ProtonVPN supports multiple mainstream protocols.
WireGuard协议WireGuard Protocol
WireGuard是新一代VPN协议,采用现代加密技术,代码量仅约4000行(远少于OpenVPN的40万行),因此更高效、更易于审计。WireGuard使用ChaCha20加密算法和Curve25519密钥交换,在提供强大安全性的同时实现了极高的速度。连接建立速度快,通常在1-2秒内完成。在大多数场景下,WireGuard比OpenVPN快30-50%。ProtonVPN推荐日常使用WireGuard协议。缺点是WireGuard相对较新,某些严格的网络环境可能对其有限制。
WireGuard is next-generation VPN protocol with modern encryption, only about 4000 lines of code (vs OpenVPN's 400,000), more efficient and auditable. Uses ChaCha20 encryption and Curve25519 key exchange. 30-50% faster than OpenVPN. Recommended for daily use.
OpenVPN协议OpenVPN Protocol
OpenVPN是成熟稳定的开源VPN协议,已有20多年历史。它使用OpenSSL库进行加密,支持AES-256等多种加密算法。OpenVPN的最大优势是兼容性和穿透能力,几乎可以在任何网络环境下工作,包括对VPN有限制的网络。它可以运行在UDP(更快)或TCP(更可靠)模式。虽然速度不如WireGuard,但在需要最大兼容性的场景下是最佳选择。ProtonVPN在所有平台上都支持OpenVPN。
OpenVPN is mature, stable open-source protocol with 20+ years history. Uses OpenSSL library, supports AES-256 and other algorithms. Maximum compatibility and bypassing capability. Can run on UDP (faster) or TCP (more reliable). Best choice when maximum compatibility is needed.
IKEv2协议IKEv2 Protocol
IKEv2(Internet Key Exchange version 2)是微软和思科共同开发的协议,通常与IPSec结合使用。IKEv2的最大特点是连接切换快速稳定,当网络类型改变时(如从Wi-Fi切换到移动数据),能够快速重新建立连接而不中断。这使得IKEv2成为移动设备的理想选择。IKEv2速度表现优秀,仅次于WireGuard。ProtonVPN在iOS平台上默认使用IKEv2协议。
IKEv2 (Internet Key Exchange version 2) was developed by Microsoft and Cisco, usually combined with IPSec. Fast and stable connection switching when network type changes. Ideal for mobile devices. Speed performance excellent, second only to WireGuard. Default protocol on iOS.
协议对比表Protocol Comparison
| 特性Feature | WireGuard | OpenVPN | IKEv2 |
|---|---|---|---|
| 速度Speed | ★★★★★ | ★★★☆☆ | ★★★★☆ |
| 安全性Security | ★★★★★ | ★★★★★ | ★★★★☆ |
| 兼容性Compatibility | ★★★☆☆ | ★★★★★ | ★★★★☆ |
| 稳定性Stability | ★★★★☆ | ★★★★★ | ★★★★★ |
| 电池消耗Battery | 低Low | 中Medium | 低Low |
| 推荐场景Use Case | 日常使用Daily | 受限网络Restricted | 移动设备Mobile |
如何选择协议How to Choose
选择协议的建议:日常上网浏览和流媒体观看,优先选择WireGuard获得最佳速度;在网络限制严格的环境(如某些国家或公司网络),使用OpenVPN确保连接成功;移动设备用户(特别是iOS)可以使用IKEv2获得稳定的连接切换体验;如果不确定,使用默认的WireGuard协议即可满足大多数需求。
Recommendations: daily browsing and streaming, choose WireGuard for best speed; in restricted networks, use OpenVPN; mobile users (especially iOS) can use IKEv2 for stable switching; if unsure, default WireGuard meets most needs.
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