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When enabled, qBittorrent will take certain measures to try to mask its identity. The exact functionality of Anonymous Mode depends on the version of qBittorrent (specifically, libtorrent-rasterbar) being used.
If you're using VPN, proxy or I2P, you probably want to enable Anonymous Mode.
- The peer-ID will no longer include the client's fingerprint
- The user-agent will be reset to an empty string
- Other identifying information will not be exposed to the public directly, such as IP, listening port, etc.
You may enable additional identity-masking features with the "Disable connections not supported by proxies" option.
qBittorrent v2.9.0 - v3.2.5
These versions of qBittorrent may make use of a version of libtorrent-rasterbar below 1.0.0. If so, enabling Anonymous Mode will enable all of the aforementioned features, plus some additional ones:
- Disables Local Peer Discovery
- Disables DHT
- Disables UPnP & NAT-PMP
- Only talks to http(s) trackers via (any) proxy
- Only talks to udp trackers via SOCKS5/I2P proxy
These additional features have since been migrated to the "Disable connections not supported by proxies" option in later versions of qBittorrent.