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What ProxyGambit is
Kamkar published ProxyGambit on July 14, 2015, as a project related to his earlier ProxyHam concept. Its basic idea is to place a device near a remote Wi-Fi network and route a user’s connection to that device. The traffic then exits through the remote Wi-Fi connection rather than the user’s nearby network. The project is a specific historical hardware experiment, not a current retail product.
That arrangement changes the apparent network exit point; by itself, it does not establish that a user’s identity or activity is hidden from every observer. The project author warns that deployment carries “many risks.” Kamkar’s project README and his project index describe the project and its intended design.
How the design routes traffic
The project describes two transport approaches. Both aim to carry a connection to a remote exit point, but they rely on different links and equipment.
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Point-to-point radio link
In the radio approach, a point-to-point wireless connection carries traffic between locations, with the remote end near Wi-Fi access. The README claims a direct, line-of-sight link of 10 km or more and “150Mbps+.” Those are Kamkar’s 2015 design claims, not independently verified range or throughput results. Actual performance would depend on conditions and equipment; the cited material does not establish a guaranteed operating distance or speed.
Reverse tunnel over GSM
The alternative uses a 2G GSM/GPRS connection to create a reverse TCP tunnel. In the README’s description, an embedded microcontroller connects over serial to a Raspberry Pi’s UART. A FONA library opens an outbound TCP connection through the GSM link; Kamkar says this approach is used because the SIM800 cannot open listening sockets. The Raspberry Pi image bridges network traffic and communicates with the microcontroller over serial. At the far end, traffic exits through Wi-Fi near the device.
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Hackaday’s contemporaneous account describes a two-ended arrangement with two FONA boards, two Arduinos, and two Raspberry Pis, each Pi acting as a network bridge. That independent summary is useful context, but it is not evidence that the setup was a tested, turnkey assembly. Hackaday’s July 16, 2015 coverage also rounds the radio-link claim to 10 km (6 miles).
Hardware in the 2015 build description
The README names the following components for its historical design. These references document what the author specified in 2015; they do not verify current availability, compatibility, or suitability for a new build.
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- Raspberry Pi 2 Model B or Model B+.
- An ATmega328-based device, with Arduino Nano given as an example.
- Adafruit FONA GSM board using a SIM800 chip, plus a FONA antenna.
- A SIM with 2G service for the GSM approach.
- For the point-to-point option, Ubiquiti NanoStation LocoM2 or LocoM5 pairs.
- A Wi-Fi adapter, with Edimax and Alfa AWUS036NH listed as examples.
- An SD card, powered USB hub, and small 3.7 V lithium-ion or lithium-polymer battery.
- A voltage divider or logic-level conversion between serial hardware.
The README also names a Raspberry Pi Wheezy image dated May 5, 2015. That old software stack and the 2G dependency make the document a historical specification, not a present-day build guide. GSM service availability varies by geography and carrier; current operator support is not established by the cited project materials.
Why ProxyGambit should not be treated as anonymity protection
Routing traffic through another Wi-Fi exit can change which network appears to originate a connection. That is narrower than demonstrating anonymity. The available project description does not establish protection against a capable observer, traffic correlation, or endpoint compromise, and it does not document a modern security audit.
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Hackaday’s 2015 article concluded that ProxyGambit “should not be used by anyone who actually needs anonymity.” This is the reporter’s warning, distinct from Kamkar’s own characterization of the project as insecure and bare-bones. Together, these cautions make the project unsuitable to rely on for sensitive or safety-critical privacy needs.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How it differs from a VPN, Tor, or phone tethering
Readers have asked why not use a VPN or Tor, or how the design compares with tethering a phone. The available sources do not provide a validated head-to-head security or performance comparison, so they do not support declaring one option a universal winner. At a high level, the relevant differences are:
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- What changes: ProxyGambit is intended to move the network exit to remote Wi-Fi. A VPN, Tor, and phone tethering use different routing arrangements; the cited sources do not analyze those alternatives in comparable tests.
- Who must be trusted: ProxyGambit depends on the remote Wi-Fi network and the integrity of the hardware and links. The materials do not offer a comparative trust assessment for VPN providers, Tor, or mobile carriers.
- What the setup depends on: ProxyGambit’s documented approaches require specialized hardware and depend on radio conditions and Wi-Fi access; its GSM approach additionally depends on 2G service. The sources do not quantify the setup burden or current service availability against the alternatives.
- Security evidence: The project is explicitly a proof of concept, and the sources cited here do not establish a modern independent security analysis or comparative test for any of these choices.
What the project’s figures do—and do not—show
Kamkar’s README claims a direct line-of-sight radio link at 10 km or more and “150Mbps+.” Hackaday’s 2015 report describes the distance in rounded terms as 10 km (6 miles). These are attributed project and reporting claims from 2015, not benchmark results or guaranteed performance figures.
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