# WHATPORT(1935)

## NAME

port 1935 — RTMP — RTMP — the Flash-era live streaming protocol that is still how most video gets pushed into a streaming platform.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA registered 1935 to Macromedia for Flash Communication Server MX, and it is the default port in Adobe's RTMP 1.0 specification (rtmp://host:1935/app). Flash is gone but RTMP ingest is not: OBS, ffmpeg, and hardware encoders publish to YouTube, Twitch, and self-hosted nginx-rtmp or SRS servers on this port, which then transcode to HLS or DASH for playback. A listener on 1935 is almost always a live-video ingest endpoint or a restreamer.

## EXPOSURE

**Expose with care.** Plain RTMP is unencrypted and the stream key travels in the clear, so anyone on the path can capture it and publish as you — expose ingest only over RTMPS, and restrict who may publish.

## CHECK

```sh
nc -vz TARGET 1935
```

## SEE ALSO

- spec — [Adobe RTMP 1.0 specification (legacy copy, Veovera)](https://veovera.org/docs/legacy/rtmp-v1-0-spec.pdf) (veovera.org)
- source — [arut/nginx-rtmp-module](https://github.com/arut/nginx-rtmp-module) (github.com)
- iana — [IANA port registry — 1935 (macromedia-fcs)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=1935) (iana.org)

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HTML: <https://whatport.net/1935/> · JSON: <https://whatport.net/1935.json> · full dataset: <https://whatport.net/ports.json>