01SIMON Discoveryudp · iana-registered · risk 1/10
UDP port 4753 is assigned to discovery for Simple Invocation of Methods Over Network (SIMON).
port 4753 as SIMON Discovery →Port 47532 services
2 entries are registered on port 4753. 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.
- entries
- 2
- transport
- udp · tcp
- in transit
- 0/2
- worst risk
- 1/10
services registered on this number
2 transports in use
entries encrypted on the wire
2 of 2 iana-registered
Services on this port
| port | service | risk | |||
|---|---|---|---|---|---|
| :4753 | SIMON Discovery | UDP | Network Services | safe | 0 |
| :4753 | SIMON (Simple Invocation of Methods Over Network) | TCP | — | safe | 0 |
02SIMON (Simple Invocation of Methods Over Network)tcp · iana-registered · risk 1/10
SIMON is an obscure IANA-assigned service name for Simple Invocation of Methods Over Network on TCP port 4753.
port 4753 as SIMON (Simple Invocation of Methods Over Network) →filed underNetwork Services
Which one is on your host
The registry says what 4753 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.
- linux
ss -ltnp | grep ':4753\b'- macos
lsof -nP -iTCP:4753 -sTCP:LISTEN- windows
netstat -ano | findstr :4753
On 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 4753 — 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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