5 entries are registered on port 9000. 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 5 iana-registered
| port | service | proto | category | risk | views |
|---|---|---|---|---|---|
| :9000 | SqueezeCenter | TCP | Web Services | caution | 14.4k |
| :9000 | UDPCast | UDP | File Transfer | caution | 14.3k |
| :9000 | Buffalo NAS Web Access | TCP | Web Services | caution | 11.8k |
| :9000 | DBGp | TCP | Remote Access | caution | 11.7k |
| :9000 | CSlistener | TCPUDP | — | safe | 0 |
Port 9000 is primarily used by Logitech SqueezeCenter (formerly SlimServer) to provide its web-based user interface and stream audio content to Squeezebox devices and clients. This application allows users to manage, control, and access their music libraries remotely through an intuitive web portal and facilitates network audio streaming.
port 9000 as SqueezeCenter →UDPCast is a network tool designed for efficient multicasting of disk images or large files across a LAN, leveraging UDP transport. It enables simultaneous data distribution to many clients without saturating network resources, which is especially useful for cloning systems or rapid software deployment.
port 9000 as UDPCast →Port 9000 is primarily used by Buffalo Technology's LinkStation and TeraStation network-attached storage (NAS) devices to provide web-based access to stored files and configure device settings. It allows users to connect remotely or locally via a web browser to upload, manage, and share files securely within their network environment.
port 9000 as Buffalo NAS Web Access →DBGp (Debugger Protocol) is a common debugging interface primarily used by PHP debugging tools such as Xdebug. Operating typically over TCP port 9000, it facilitates communication between the IDE and the server for efficient debugging workflows including breakpoint management, code inspection, and execution control.
port 9000 as DBGp →CSlistener is the service name assigned to TCP and UDP port 9000.
port 9000 as CSlistener →The registry says what 9000 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 ':9000\b'lsof -nP -iTCP:9000 -sTCP:LISTENnetstat -ano | findstr :9000On 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 5 entries above.
A port number is not a service. Anything may listen on 9000 — 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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