# WHATPORT(5815)

## NAME

port 5815 — Unassigned — Unassigned at IANA, immediately above the icmpd and Support Automation registrations, with nothing standard on it.

Protocol: TCP  
IANA registry

## DESCRIPTION

The registry assigns 5813 to icmpd and 5814 to spt-automation, and then stops — 5815 has no entry and no widely deployed default. Nothing about the number implies a protocol, so an open 5815 tells you only that some application on the host chose it. VNC's 5800+display rule would make it display :15, which is unusual enough not to be a safe assumption.

## EXPOSURE

**Expose with care.** Unregistered and therefore unidentified from the port alone. Establish what is listening before deciding on exposure.

## CHECK

```sh
sudo lsof -nP -iTCP:5815 -sTCP:LISTEN
```

## SEE ALSO

- iana — [IANA port registry — 5815 (unassigned)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=5815) (iana.org)

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HTML: <https://whatport.net/5815/> · JSON: <https://whatport.net/5815.json> · full dataset: <https://whatport.net/ports.json>