Tor Relay Nodes

Infraestrutura 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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Detalhes

Licença BSD-3-Clause (https://gitlab.torproject.org/tpo/core/tor)
Status de Dev 🟢 Ativo
Detalhe do Status de Dev Released (production)
Proprietário The Tor Project, Inc. (nonprofit) / Volunteer operators worldwide
Órgão de Governança The Tor Project, Inc. (non-profit)
País USA (Tor Project HQ, Cambridge MA) / Globally distributed
Ano de Início 2002
Stack C (core Tor daemon); Python (tooling and scripts)
Financiamento US State Department / OTF / NSF / private donations (Tor Project receives grants; relays operated by unpaid volunteers)
Última Investigação 9 de mar. de 2026

Domínios de Caso de Uso

Evolução de Plataformas e Soberania

Capacidades

Autoalojável

Infraestrutura P2P Atributos

Origens US Naval Research Lab onion routing research (Paul Syverson, Michael G. Reed, David Goldschlag, 1990s); EFF funded early development
Banco de Dados N/A (routing infrastructure, no application data store)
Formatos de Dados Arbitrary TCP streams (application-agnostic transport layer)
Suporte Móvel N/A (relay operator infrastructure, not an end-user app)
Suporte Web N/A
Aplicativos Nativos Yes (CLI: torrc configuration; relay management tooling)
Termos Free to operate (volunteer bandwidth donation); no compensation for relay operators
Fundos Tor Project budget ~$5M/year (grants from US State Dept, OTF, NSF, private donors); relay operators self-fund
Baseado Em Onion routing (Paul Syverson et al., US NRL); inspired by earlier mix networks
Arquitetura P2P Onion routing (layered encryption, 3-hop circuit: guard → middle → exit)
Rede de Sobreposição Global (public relay directory maintained by directory authorities; bridges unlisted)
Endereçamento por Conteúdo No (location-based routing, not content-addressed)
Local-First N/A (routing infrastructure; data passes through, not stored)
Criptografia de Ponta a Ponta (E2EE) Yes — multi-layer onion encryption (each hop decrypts one layer; E2EE between client and exit for HTTPS traffic depends on application)
Tolerância a Falhas Bizantinas No (probabilistic, not BFT; network trusts directory authority consensus)
Assinatura RSA-1024 (legacy) / Ed25519 (modern) — relay identity keys; TLS for transport
Permissões Exit policies (each relay operator configures exit policy rules); directory authority flags (Guard, Exit, Fast, Stable)
Maturidade / Padronização do Protocolo De Facto Standard (Tor protocol is an open specification implemented by multiple clients; no formal standards body)
Função de Infraestrutura Anonymous routing; Censorship circumvention
Modelo de Ameaça State-level censorship; Mass surveillance; Traffic analysis; DPI (Deep Packet Inspection); ISP-level blocking
Modelo de Nó Voluntário Volunteer-operated (self-funded by operators); Hybrid (volunteer + foundation-operated bridges and some exit relays)
Visibilidade do Tráfego No content (encrypted payload only); No metadata between hops (each relay knows only previous and next hop, not origin and destination simultaneously)
Escala de Implantação Ativa ~8,000 active relay nodes (July 2025); ~2,000 bridge relays; ~2.5M daily users; majority of traffic from Russia, Iran, USA