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DC++ FAQ

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What ports does DC++ use ?

Outbound:
TCP: 411 This is the default port hubs operate on. They also operate on other ports in attempts to bypass ISPs who block port 411 traffic.
TCP: 1025-32000 DC++ will use any outgoing port for file transfers and searches. This is the default behavior of any program establishing an outgoing connection.

Inbound:
TCP: 1025-32000 Unless a port is specified in the active mode port, DC++ will use any available port in that range for establishing file transfers. Searches are also returned from the hub on a port the client sets up (passive mode searching).

UDP: 1025-32000 Unless a port is specified in the active mode port, DC++ will use any available port in that range for returning search results