2 entries are registered on port 8500. 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 |
|---|---|---|---|---|---|
| :8500 | ColdFusion Server | TCP | Web Services | caution | 15.3k |
| :8500 | Flight Message Transfer Protocol | TCPUDP | — | safe | 0 |
Port 8500 is most commonly associated with Adobe ColdFusion Server's default web service for development and testing environments. It can also serve as the default port for legacy applications such as Duke Nukem 3D multiplayer hosting. Primarily, it functions as a development HTTP service that allows developers to create, test, and manage ColdFusion applications before deployment to production servers.
port 8500 as ColdFusion Server →Port 8500 is assigned to the Flight Message Transfer Protocol (fmtp) over TCP and UDP.
port 8500 as Flight Message Transfer Protocol →The registry says what 8500 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 ':8500\b'lsof -nP -iTCP:8500 -sTCP:LISTENnetstat -ano | findstr :8500On 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 8500 — 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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