Tor Relay Nodes

Infraestructura P2P

Volunteer-operated network nodes implementing the Tor onion routing protocol, providing anonymous multi-hop routing for internet traffic through guard (entry), middle, and exit relay roles. Each relay peels one layer of encryption, ensuring no single node knows both the origin and destination of traffic.

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Detalles

Licencia BSD-3-Clause (https://gitlab.torproject.org/tpo/core/tor)
Estado de Desarrollo 🟢 Activo
Detalle del Estado de Desarrollo Released (production)
Propietario The Tor Project, Inc. (nonprofit) / Volunteer operators worldwide
Órgano de Gobierno The Tor Project, Inc. (non-profit)
País USA (Tor Project HQ, Cambridge MA) / Globally distributed
Año de Inicio 2002
Stack C (core Tor daemon); Python (tooling and scripts)
Financiamiento US State Department / OTF / NSF / private donations (Tor Project receives grants; relays operated by unpaid volunteers)
Última Investigación 9 mar 2026

Dominios de Caso de Uso

Evolución de Plataformas y Soberanía

Capacidades

Autoalojable

Infraestructura P2P Atributos

Orígenes US Naval Research Lab onion routing research (Paul Syverson, Michael G. Reed, David Goldschlag, 1990s); EFF funded early development
Base de Datos N/A (routing infrastructure, no application data store)
Formatos de Datos Arbitrary TCP streams (application-agnostic transport layer)
Soporte Móvil N/A (relay operator infrastructure, not an end-user app)
Soporte Web N/A
Aplicaciones Nativas Yes (CLI: torrc configuration; relay management tooling)
Términos Free to operate (volunteer bandwidth donation); no compensation for relay operators
Fondos Tor Project budget ~$5M/year (grants from US State Dept, OTF, NSF, private donors); relay operators self-fund
Basado En Onion routing (Paul Syverson et al., US NRL); inspired by earlier mix networks
Arquitectura P2P Onion routing (layered encryption, 3-hop circuit: guard → middle → exit)
Red de Superposición Global (public relay directory maintained by directory authorities; bridges unlisted)
Direccionamiento por Contenido No (location-based routing, not content-addressed)
Local-First N/A (routing infrastructure; data passes through, not stored)
Cifrado de Extremo a Extremo (E2EE) Yes — multi-layer onion encryption (each hop decrypts one layer; E2EE between client and exit for HTTPS traffic depends on application)
Tolerancia a Fallos Bizantinos No (probabilistic, not BFT; network trusts directory authority consensus)
Firma RSA-1024 (legacy) / Ed25519 (modern) — relay identity keys; TLS for transport
Permisos Exit policies (each relay operator configures exit policy rules); directory authority flags (Guard, Exit, Fast, Stable)
Madurez del Protocolo / Estandarización De Facto Standard (Tor protocol is an open specification implemented by multiple clients; no formal standards body)
Función de Infraestructura Anonymous routing; Censorship circumvention
Modelo de Amenazas State-level censorship; Mass surveillance; Traffic analysis; DPI (Deep Packet Inspection); ISP-level blocking
Modelo de Nodo Voluntario Volunteer-operated (self-funded by operators); Hybrid (volunteer + foundation-operated bridges and some exit relays)
Visibilidad del Tráfico No content (encrypted payload only); No metadata between hops (each relay knows only previous and next hop, not origin and destination simultaneously)
Escala de Despliegue Activo ~8,000 active relay nodes (July 2025); ~2,000 bridge relays; ~2.5M daily users; majority of traffic from Russia, Iran, USA