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WireGuard

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WireGuard's own site

What WireGuard is

WireGuard is a free VPN for securely encapsulating IP packets over UDP. It runs on Linux, Windows, macOS, iOS and Android, and can also be self-hosted. Peers authenticate with public keys, while cryptokey routing links those keys to allowed tunnel IP addresses that also act as routing and access-control rules. The protocol uses the Noise framework with Curve25519, ChaCha20, Poly1305, BLAKE2, SipHash24 and HKDF. WireGuard periodically rotates session keys for perfect forward secrecy, authenticates the first handshake message before allocating server state, and describes cookie mitigation under load. IP roaming lets peers update endpoints from authenticated traffic. The project says its compact implementation is intended to be auditable. The wg utility configures interfaces and peers, while wg-quick handles routine setup and teardown. Interfaces can be moved into Docker network namespaces. WireGuard does not focus on obfuscation, does not tunnel over TCP, and is not post-quantum secure by default.

Who it suits

WireGuard suits people needing a free VPN across major desktop and mobile platforms, including self-hosted and Docker-based setups. It also fits users who prefer public-key configuration and command-line tools.

What it does well

  • Free plan across desktop and mobile platforms
  • Public-key peer authentication
  • Rotating session keys provide forward secrecy
  • Docker network-namespace support
  • wg-quick automates routine setup

What to know first

  • No TCP tunneling
  • Obfuscation is outside the protocol
  • Not post-quantum secure by default
  • Basic administrative control

Verdict

WireGuard offers a free, cross-platform VPN with public-key routing, roaming and a compact design. Its UDP-only transport, limited obfuscation focus and default post-quantum limitation matter for specialized deployments.

Facts from WireGuard's own pages

Access model
vpn · wireguard.com, 22 Sept 2026
Admin control level
basic · wireguard.com, 22 Sept 2026
Configuration
Peers authenticate with public keys, and WireGuard handles the rest of the connection transparently. · wireguard.com, 11 Oct 2026
Containers
A WireGuard interface can be moved into a Docker container’s network namespace so the container can use the tunnel as its only network interface. · wireguard.com, 11 Oct 2026
Container use
A WireGuard interface can be moved into a Docker container's network namespace so the tunnel is the container's only network interface. · wireguard.com, 11 Oct 2026
Cryptography
WireGuard uses the Noise protocol framework, Curve25519, ChaCha20, Poly1305, BLAKE2, SipHash24, and HKDF. · wireguard.com, 11 Oct 2026
Denial-of-service mitigation
The first handshake message is authenticated before the server allocates state, and the protocol describes cookie-based mitigation when the server is under load. · wireguard.com, 11 Oct 2026
Free plan
Yes · wireguard.com, 22 Sept 2026
Installation options
The installation page provides Windows, macOS, iOS, Android, and numerous Linux and BSD installation options, with source compilation available for unlisted distributions. · wireguard.com, 11 Oct 2026
Integrations
The project describes using WireGuard with Docker network namespaces and lists packages or installation instructions for many Linux distributions and BSD systems. · wireguard.com, 11 Oct 2026
Key security
The protocol periodically establishes rotating session keys to provide perfect forward secrecy. · wireguard.com, 11 Oct 2026
License
The kernel components are GPLv2; other project components use MIT, BSD, Apache 2.0, or GPL depending on context. · wireguard.com, 11 Oct 2026
Licensing
The kernel components are GPLv2, while other project components use MIT, BSD, Apache 2.0, or GPL depending on context. · wireguard.com, 11 Oct 2026
Limit: obfuscation
WireGuard does not focus on obfuscation and says that should happen at a layer above the protocol. · wireguard.com, 11 Oct 2026
Limit: post-quantum
WireGuard is not post-quantum secure by default, though its pre-shared-key parameter can add a layer of post-quantum secrecy. · wireguard.com, 11 Oct 2026
Limit: transport
WireGuard does not support tunneling over TCP; the site says transforming its UDP packets to TCP is the job of an upper layer. · wireguard.com, 11 Oct 2026
Performance and design
The project describes WireGuard as a fast, simple VPN designed for uses ranging from embedded interfaces to supercomputers. · wireguard.com, 11 Oct 2026
Platforms
The project lists Windows, macOS, BSD, iOS, and Android as supported cross-platform targets, and provides Linux installation instructions. · wireguard.com, 11 Oct 2026
Purpose
WireGuard is a fast, modern VPN that securely encapsulates IP packets over UDP. · wireguard.com, 11 Oct 2026
Roaming
WireGuard supports IP roaming: peers update their endpoint based on authenticated traffic from the most recent endpoint. · wireguard.com, 11 Oct 2026
Routing
Its cryptokey routing associates peer public keys with allowed tunnel IP addresses, which serve as routing and access-control rules. · wireguard.com, 11 Oct 2026
Security review
The project says its cryptographic choices have been reviewed by cryptographers and its small implementation is designed to be auditable. · wireguard.com, 11 Oct 2026
Support
The project recommends its #wireguard IRC channel for setup and usage help, and directs development discussion to its mailing list. · wireguard.com, 11 Oct 2026
Supported platforms
The project lists Windows, macOS, BSD, iOS, and Android as cross-platform targets, and its installation page provides Linux distribution instructions. · wireguard.com, 11 Oct 2026

Where WireGuard stands on Freedom251

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