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Direct Connect Hub
Direct Connect is a peer-to-peer file sharing protocol allowing users to share files over a decentralized network. Port 411 is the default port used by Direct Connect hubs, serving as the central meeting point for clients connecting to the network. These hubs coordinate user connections, manage chat and file searches, and facilitate file transfers between clients..
Direct Connect (DC) operates as a hub-centric peer-to-peer protocol where clients connect to a central hub over TCP, commonly on port 411. The hub acts as a directory, enabling clients to search for files, initiate chats, and manage user presence. While hubs don't serve files themselves, they coordinate connections and provide metadata about available files across the network.
Clients communicate with the hub using a text-based protocol, sending search queries and receiving results. Once users locate files, direct client-to-client transfers are established, often over separate ports negotiated dynamically. The hub maintains user lists and enforces sharing rules or restrictions to maintain network health.
Port 411 is open by default in many DC hub implementations such as YnHub or Verlihub, though custom configurations may use alternative ports. It is generally unencrypted, relying on TCP for data integrity but lacking inherent confidentiality or strong authentication mechanisms.