Claude 078c323ef3 relay: add WebTransport listener + WASM client, share UDP/443 via ALPN mux
The relay now accepts WebTransport sessions on the same UDP socket that
serves raw QUIC. The ALPN-multiplexing QUIC listener owns the socket and
dispatches incoming connections: "nb-quic" continues to the existing
relay handler, "h3" is handed to webtransport-go via http3.Server.
Browsers reach the relay over 443/udp without a second port.

Client side:
- Native builds keep using raw QUIC (no WT dialer registered).
- WASM/browser builds gain a WebTransport dialer that bridges syscall/js
  to the browser's WebTransport API and uses datagrams (matching the
  native QUIC dialer's semantics — no head-of-line blocking).
- The race dialer learned a transport hint so clients skip dialers a
  given relay has not advertised.

Management protocol carries the hint as a new RelayEndpoint{url,
transports[]} list on RelayConfig, mirroring how peers and proxies
announce capabilities. Older management servers that only send urls keep
working unchanged.

devcert build: relay generates an ECDSA P-256 cert with 13-day validity
(within the WebTransport serverCertificateHashes 14-day cap) and exposes
its SHA-256 so the WASM dialer can pin it.

Bumps quic-go v0.55.0 -> v0.59.0 (no API breaks for relay's importers)
and adds github.com/quic-go/webtransport-go v0.10.0.
2026-05-17 11:08:30 +00:00
2022-10-22 16:19:16 +02:00
2025-04-09 20:18:52 +01:00
2024-10-30 17:18:27 +01:00
2022-12-02 13:54:22 +01:00

Start using NetBird at netbird.io
See Documentation
Join our Slack channel or our Community forum

🚀 We are hiring! Join us at careers.netbird.io

New: NetBird terraform provider


NetBird combines a configuration-free peer-to-peer private network and a centralized access control system in a single platform, making it easy to create secure private networks for your organization or home.

Connect. NetBird creates a WireGuard-based overlay network that automatically connects your machines over an encrypted tunnel, leaving behind the hassle of opening ports, complex firewall rules, VPN gateways, and so forth.

Secure. NetBird enables secure remote access by applying granular access policies while allowing you to manage them intuitively from a single place. Works universally on any infrastructure.

Open Source Network Security in a Single Platform

https://github.com/user-attachments/assets/10cec749-bb56-4ab3-97af-4e38850108d2

Self-Host NetBird (Video)

Watch the video

Key features

Connectivity Management Security Automation Platforms
  • - [x] Kernel WireGuard
  • - [x] Linux
  • - [x] Peer-to-peer connections
  • - [x] Auto peer discovery and configuration
  • - [x] Mac
  • - [x] Connection relay fallback
  • - [x] Windows
  • - [x] IdP groups sync with JWT
  • - [x] Android
  • - [x] NAT traversal with BPF
  • - [x] Peer-to-peer encryption
  • - [x] iOS
  • - [x] OpenWRT
  • - [x] Docker

Quickstart with NetBird Cloud

Quickstart with self-hosted NetBird

This is the quickest way to try self-hosted NetBird. It should take around 5 minutes to get started if you already have a public domain and a VM. Follow the Advanced guide with a custom identity provider for installations with different IDPs.

Infrastructure requirements:

  • A Linux VM with at least 1CPU and 2GB of memory.
  • The VM should be publicly accessible on TCP ports 80 and 443 and UDP port: 3478.
  • Public domain name pointing to the VM.

Software requirements:

  • Docker installed on the VM with the docker-compose plugin (Docker installation guide) or docker with docker-compose in version 2 or higher.
  • jq installed. In most distributions Usually available in the official repositories and can be installed with sudo apt install jq or sudo yum install jq
  • curl installed. Usually available in the official repositories and can be installed with sudo apt install curl or sudo yum install curl

Steps

  • Download and run the installation script:
export NETBIRD_DOMAIN=netbird.example.com; curl -fsSL https://github.com/netbirdio/netbird/releases/latest/download/getting-started.sh | bash
  • Once finished, you can manage the resources via docker-compose

A bit on NetBird internals

  • Every machine in the network runs NetBird Agent (or Client) that manages WireGuard.
  • Every agent connects to Management Service that holds network state, manages peer IPs, and distributes network updates to agents (peers).
  • NetBird agent uses WebRTC ICE implemented in pion/ice library to discover connection candidates when establishing a peer-to-peer connection between machines.
  • Connection candidates are discovered with the help of STUN servers.
  • Agents negotiate a connection through Signal Service passing p2p encrypted messages with candidates.
  • Sometimes the NAT traversal is unsuccessful due to strict NATs (e.g. mobile carrier-grade NAT) and a p2p connection isn't possible. When this occurs the system falls back to a relay server called TURN, and a secure WireGuard tunnel is established via the TURN server.

Coturn is the one that has been successfully used for STUN and TURN in NetBird setups.

See a complete architecture overview for details.

Community projects

Note: The main branch may be in an unstable or even broken state during development. For stable versions, see releases.

Support acknowledgement

In November 2022, NetBird joined the StartUpSecure program sponsored by The Federal Ministry of Education and Research of The Federal Republic of Germany. Together with CISPA Helmholtz Center for Information Security NetBird brings the security best practices and simplicity to private networking.

CISPA_Logo_BLACK_EN_RZ_RGB (1)

Testimonials

We use open-source technologies like WireGuard®, Pion ICE (WebRTC), Coturn, and Rosenpass. We very much appreciate the work these guys are doing and we'd greatly appreciate if you could support them in any way (e.g., by giving a star or a contribution).

This repository is licensed under BSD-3-Clause license that applies to all parts of the repository except for the directories management/, signal/ and relay/. Those directories are licensed under the GNU Affero General Public License version 3.0 (AGPLv3). See the respective LICENSE files inside each directory.

WireGuard and the WireGuard logo are registered trademarks of Jason A. Donenfeld.

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