# WHATPORT(3052)

## NAME

port 3052 — APC PowerChute (apc-3052) — APC's UPS shutdown channel — PowerChute Network Shutdown talking to a UPS Network Management Card.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA registers 3052 as `apc-3052` to American Power Conversion, and APC/Schneider use it for PowerChute Network Shutdown: the UPS Network Management Card sends the agent a UDP packet on 3052 roughly every 25 seconds, and the loss of those packets is what triggers a graceful shutdown. Schneider's own port list for PCNS is TCP 80, 443, 3052 and 6547 plus UDP 3052. On a scan, 3052 means a server running the PowerChute agent or an APC management card, usually in a rack somewhere on a facilities network.

## EXPOSURE

**Do not expose.** It is a power-control signalling path — anything that can forge traffic to it is adjacent to shutting servers down. Keep UPS management and PowerChute agents on a management VLAN.

## CHECK

```sh
nc -vz TARGET 3052
```

## SEE ALSO

- docs — [Schneider Electric — What ports are utilized by PowerChute Network Shutdown and how are they secured?](https://www.se.com/us/en/faqs/FA373363/) (se.com)
- iana — [IANA Service Name and Transport Protocol Port Number Registry](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml) (iana.org)

---

HTML: <https://whatport.net/3052/> · JSON: <https://whatport.net/3052.json> · full dataset: <https://whatport.net/ports.json>