# WHATPORT(19283)

## NAME

port 19283 — Sassafras KeyServer (keysrvr) — The license-management port of Sassafras KeyServer, used by its KeyAccess clients.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA registers 19283 as keysrvr, "Key Server for SASSAFRAS", to Sassafras Software, whose KeyServer product does software-license metering and computer-inventory tracking on university and enterprise fleets. Managed machines run a KeyAccess client that talks to the server on this port, which is why it shows up across a whole lab or campus subnet at once. Nmap sees it more often on UDP than TCP.

## EXPOSURE

**Do not expose.** An internal asset- and license-management service that every managed endpoint trusts. There is no reason for it to answer outside the organization's network.

## CHECK

```sh
nc -vz -w 3 TARGET 19283
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry — 19283 (keysrvr)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=19283) (iana.org)

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HTML: <https://whatport.net/19283/> · JSON: <https://whatport.net/19283.json> · full dataset: <https://whatport.net/ports.json>