# WHATPORT(3371)

## NAME

port 3371 — satvid-datalnk (Satellite Video Data Link) — The last port of the 3367-3371 satellite-video block, and the one that sits directly below MSDTC's TIP port.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA's satvid-datalnk range ends at 3371; the next port up, 3372, is Microsoft's TIP transaction port. Like the rest of the range, 3371 has a registrant name and nothing else — no specification, no reference implementation, no meaningful scan presence. Its practical value is as a landmark when you are reading a port list next to 3372 on a Windows host.

## EXPOSURE

**Expose with care.** No known protocol to reason about, so nothing here justifies internet exposure without first identifying the listener.

## CHECK

```sh
nc -vz -w 3 TARGET 3371
```

## 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/3371/> · JSON: <https://whatport.net/3371.json> · full dataset: <https://whatport.net/ports.json>