2 entries are registered on port 5555. 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 |
|---|---|---|---|---|---|
| :5555 | Freeciv | TCP | Security | caution | 26.9k |
| :5555 | Personal Agent | TCPUDP | — | safe | 0 |
Port 5555 is unofficially associated with the popular free and open-source turn-based strategy game Freeciv, along with services such as Hewlett-Packard Data Protector, McAfee EndPoint Encryption Database Server, and SAP applications. Primarily, Freeciv uses this port for network gameplay sessions, where players connect to dedicated servers enabling multiplayer matches across various systems.
port 5555 as Freeciv →Personal Agent traffic is assigned to TCP and UDP port 5555.
port 5555 as Personal Agent →The registry says what 5555 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 ':5555\b'lsof -nP -iTCP:5555 -sTCP:LISTENnetstat -ano | findstr :5555On 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 5555 — 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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