WireGuard, created by security researcher Jason A. Donenfeld, is smaller and simpler than most other VPN software. The first version of WireGuard contained fewer than 4,000 lines of code—compared with tens of thousands of lines in other VPN software. That doesn't make WireGuard more secure, but it makes it easier to find and fix problems.

WireGuard clients are already available for Android, iOS, MacOS, Linux, and Windows. Cloudflare's VPN service Warp is based on the WireGuard protocol, and several commercial VPN providers also enable users to use the WireGuard protocol, including TorGuard, IVPN, and Mullvad.

This is a technical reference for advanced users familiar with PKI processes. If you need a more detailed description, see the EasyRSA-Readme or Intro-To-PKI docs instead.

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Thisarticle takesa detailed look at the design principles, the basis for deploying VPN, and the IPSECprotocol concept, providing a description of thegeneral features of IPSECand of the mechanisms required for itsimplementation. This article was speciallyselected for translation bydeveloperWorks Russia as an example of developerWorks world-wide offerings.