OpenFlux: TCP Tunnel Boundaries

Overview

This series explains how OpenFlux separates an IPv4/TCP tunnel from the application-level services that carry its packets. It moves from SOCKS5 and iOS entry points through userspace TCP, wrappers, Yandex and MAX service state, exit-host networking, and end-to-end failure ownership. The result is a bounded way to compare carriers and judge protection, recovery, compatibility, and research value without treating OpenFlux as a universal or production-grade VPN.

Learning outcomes

OpenFlux keeps application entry, TCP state, packet carriage, and exit forwarding in separate owners.
Changing carriers does not add unsupported IPv6, UDP, or general IP coverage.
Authenticated encryption protects payload contents under a shared secret, but carrier metadata and endpoint trust remain.
A working demo or focused test does not establish live compatibility, performance, anonymity, or production safety.

Keywords

OpenFluxTCPTransportIPv4SOCKS5YandexMAXiOSEncryptiongVisor

Chapters

OpenFlux: Tunnel vs Carrier

A practical map of packet, service, and exit ownership

10 min · A practical map of packet, service, and exit ownership

10 min

OpenFlux: From Stream to Packet

How SOCKS5 reaches the userspace TCP stack

11 min · How SOCKS5 reaches the userspace TCP stack

11 min

OpenFlux: Exit Node Networking

Raw sockets, address rewriting, and kernel resets

11 min · Raw sockets, address rewriting, and kernel resets

11 min

OpenFlux: Transport Contract Limits

Why shared methods do not guarantee shared delivery

12 min · Why shared methods do not guarantee shared delivery

12 min

OpenFlux: End-to-End Connection Trace

Follow state from SOCKS5 to the destination

11 min · Follow state from SOCKS5 to the destination

11 min

OpenFlux: Yandex Docs Transport

How editor sessions become a packet channel

11 min · How editor sessions become a packet channel

11 min

OpenFlux: MAX Account Transport

How calls and signaling carry packet bytes

11 min · How calls and signaling carry packet bytes

11 min

OpenFlux: Payload Protection Limits

What encryption hides—and what carriers still see

10 min · What encryption hides—and what carriers still see

10 min

OpenFlux: iOS Packet Tunnel

System capture, DNS over TLS, and memory limits

12 min · System capture, DNS over TLS, and memory limits

12 min

OpenFlux: Research Tool Evaluation

A conditional test of coverage, risk, and evidence

13 min · A conditional test of coverage, risk, and evidence

13 min

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Plans

Ch.1-3 FreeCh.4-10 Premium

FAQ

What is OpenFlux designed to demonstrate?

OpenFlux demonstrates how an IPv4/TCP tunnel can carry packets through replaceable, application-level service channels. It is presented as a research tool, not a universal VPN or anonymity system.

What traffic does OpenFlux support?

The desktop path supports TCP over IPv4 through SOCKS5 CONNECT, while iOS system mode forwards IPv4 TCP and handles DNS separately. UDP association, BIND, IPv6 destinations, and other UDP traffic are outside the demonstrated paths.

What changes when OpenFlux switches carriers?

Switching carriers changes how tunnel packet bytes travel and adds service-specific sessions, queues, credentials, framing, and recovery behavior. It does not replace the tunnel’s TCP limits or the exit host’s raw-network requirements.

What can OpenFlux’s encryption and tests prove?

Encryption can authenticate and protect packet contents under a shared secret, while focused tests verify selected local cases. Neither proves anonymity, live provider compatibility, sustained performance, or production readiness.