obsf3

support.torproject.orgsite

Outdated and deprecated bridge type. Predecessor of obsf4.

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Tor

added

2026-10-10

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1. ▲
   obsf2 gitlab.torproject.org

   site category #tor link ↗

   Outdated and deprecated bridge type. Predecessor of obsf3.

2. ▲
   obsf4 support.torproject.org

   site category #tor link ↗

   A pluggable transport that makes Tor traffic look random and also prevents censors from finding bridges by Internet scanning.

3. ▲
   Bridges tb-manual.torproject.org

   site category #tor link ↗

   Most Pluggable Transports, such as obfs4, rely on the use of "bridge" relays.

4. ▲
   fteproxy fteproxy.org

   site category #tor link ↗

   Outdated and deprecated bridge type. Tor traffic resembles plain HTTP. The name stands for "Format-Transforming Encryption."

   
5. ▲
   FOFA fofa.so

   site category #web-security link ↗
6. ▲
   Flash Proxies crypto.stanford.edu

   site category #tor link ↗

   Outdated and deprecated bridge type. It is a miniature proxy that runs in a web browser.

Tor › Bridges: “Outdated and deprecated bridge type. Predecessor of obsf4.”