# WHATPORT(8675)

## NAME

port 8675 — msi-cps-rm — Motorola Solutions' Customer Programming Software for Radio Management — TCP service, UDP discovery.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA assigned 8675 to Motorola Solutions in March 2012: msi-cps-rm on TCP for "Customer Programming Software for Radio Management", and msi-cps-rm-disc on UDP for its discovery counterpart. CPS is the Windows tool technicians use to read and write codeplugs on two-way radios, and Radio Management is its fleet-scale server version. The protocol is proprietary and undocumented publicly. You would see this on a radio-shop workstation or an RM server, not on general infrastructure; Nmap rates it open on about 0.015% of hosts.

## EXPOSURE

**Expose with care.** This programs radio fleets — encryption keys and talkgroup configuration included. Keep it on the radio management LAN; nothing about the protocol is public enough to defend it on an open network.

## CHECK

```sh
sudo lsof -nP -iTCP:8675 -sTCP:LISTEN
```

## SEE ALSO

- 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)
- source — [nmap-services — Nmap port frequency data](https://github.com/nmap/nmap/blob/master/nmap-services) (github.com)

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HTML: <https://whatport.net/8675/> · JSON: <https://whatport.net/8675.json> · full dataset: <https://whatport.net/ports.json>