2 entries are registered on port 3784. It is a registered port (1024–49151) — IANA records an assignee, but nothing stops other software from listening here, which is why the number carries more than one entry.
services registered on this number
2 transports in use
entries encrypted on the wire
1 of 2 iana-registered
| port | service | proto | category | risk | views |
|---|---|---|---|---|---|
| :3784 | Ventrilo | TCPUDP | Gaming | caution | 4.9k |
| :3784 | Bidirectional Forwarding Detection (BFD) | TCPUDP | Security | caution | 0 |
Ventrilo is a popular Voice over IP (VoIP) communication software primarily used by gamers to facilitate real-time audio chat. It offers reliable, low-latency voice transmission, supporting multiple users simultaneously in configurable channels. Its simplicity and efficient bandwidth usage have made it a preferred choice for online multiplayer gaming communities.
port 3784 as Ventrilo →BFD control traffic rapidly detects forwarding-path failures between network devices.
port 3784 as Bidirectional Forwarding Detection (BFD) →The registry says what 3784 is registered to. What is listening on it right now is decided by the host, and only the host can be asked. Each of these prints the process behind the socket.
ss -ltnp | grep ':3784\b'lsof -nP -iTCP:3784 -sTCP:LISTENnetstat -ano | findstr :3784On Linux and Windows the process name comes back with the socket; on macOS lsof needs sudo to name a process that isn't yours. Match what it prints against the 2 entries above.
A port number is not a service. Anything may listen on 3784 — what you actually met is decided by the host, not the registry. If a service is missing here, it belongs in the registry.
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