# WHATPORT(3369)

## NAME

port 3369 — satvid-datalnk (Satellite Video Data Link) — One of five ports IANA reserved in 1990s-era block 3367-3371 for a satellite video data link; effectively never seen.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA registers 3367-3371 as a single range, satvid-datalnk, "Satellite Video Data Link", to Scott Engel — with no protocol restriction, no RFC, and no public specification. No open-source or mainstream commercial product implements it. Nmap's service-frequency data ranks 3369/tcp near the bottom of what its scans ever find open. If something is listening here it is almost certainly an unrelated application that picked a free high port, not satellite video.

## EXPOSURE

**Expose with care.** Nothing standard listens here, so an open 3369 is an unidentified service — find the owning process with lsof or ss before deciding anything about it.

## CHECK

```sh
nmap -Pn -sV -p 3369 TARGET
```

## SEE ALSO

- iana — [IANA port registry — 3367-3371 (satvid-datalnk)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=satvid-datalnk) (iana.org)

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HTML: <https://whatport.net/3369/> · JSON: <https://whatport.net/3369.json> · full dataset: <https://whatport.net/ports.json>