UDP 6883
Synopsis
- UDP 6883 is most commonly associated with BitTorrent peer-to-peer traffic.
- Many BitTorrent clients historically used the 6881–6889 range; if set to 6883, they listen on that UDP port for uTP (Micro Transport Protocol), DHT, and UDP tracker communications.
- Real-world software that may use UDP 6883 when configured to that port includes uTorrent/BitTorrent (Windows), qBittorrent, Transmission (Linux/macOS), Vuze/Azureus, and Deluge.
- NAS and appliance clients such as Synology Download Station and QNAP Download Station also commonly use a user-selected listening port like 6883 for BitTorrent features.
- In practice, public and private BitTorrent swarms frequently generate UDP 6883 traffic when peers are configured to that port.
- Security note: BitTorrent’s UDP-based features have been abused for reflection/amplification DDoS attacks, so malicious traffic may also be observed on UDP 6883 when targets or reflectors happen to use that port.
Observed activity
Last 30 days
Detailed chart