# WHATPORT(3878)

## NAME

port 3878 — FotoG CAD interface (registered) — Registered for the CAD interface of FotoG, a close-range photogrammetry package.

Protocol: TCP  
IANA: fotogcad

## DESCRIPTION

IANA registers 3878 as fotogcad, "FotoG CAD interface", to a private assignee. FotoG was a close-range photogrammetry product used to build measured 3D models from photographs — the registered port is its link to a CAD application, not a general-purpose network service. No protocol documentation is public and the software is not in current circulation. Expect to never see this on a scan.

## EXPOSURE

**Do not expose.** A local application-to-application interface with no documented authentication has no reason to be reachable off the workstation.

## CHECK

```sh
sudo lsof -nP -iTCP:3878 -sTCP:LISTEN
```

## SEE ALSO

- iana — [IANA port registry — 3878 (fotogcad)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3878) (iana.org)

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HTML: <https://whatport.net/3878/> · JSON: <https://whatport.net/3878.json> · full dataset: <https://whatport.net/ports.json>