# WHATPORT(616)

## NAME

port 616 — sco-sysmgr — SCO System Administration Server — the admin service of a SCO Unix box, and those are museum pieces.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA registers TCP and UDP 616 as "sco-sysmgr", the SCO System Administration Server, from the SCO OpenServer and UnixWare line. It is one of a small cluster of SCO administrative ports registered in the same range, alongside sco-dtmgr on 617. SCO Unix has had no meaningful presence for two decades, so a listener here is either genuinely ancient industrial or point-of-sale hardware, or unrelated software that happened to pick 616.

## EXPOSURE

**Do not expose.** A system administration plane on an operating system that stopped receiving security fixes long ago. If this is real SCO, it should be behind a firewall and on a plan to be retired.

## CHECK

```sh
nc -vz -w 3 TARGET 616
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry — 616](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=616) (iana.org)

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HTML: <https://whatport.net/616/> · JSON: <https://whatport.net/616.json> · full dataset: <https://whatport.net/ports.json>