# WHATPORT(4449)

## NAME

port 4449 — PrivateWire (IANA registration) — Registered to the PrivateWire VPN product of the 1990s; effectively extinct today.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA carries 4449 as PrivateWire, registered by Uri Resnitzky for an early commercial encrypted-tunnel product. The software is long gone from the market and there is no public protocol specification. An open 4449 today is far more likely to be an in-house or bespoke service that took the number than an actual PrivateWire gateway.

## EXPOSURE

**Expose with care.** The registration tells you nothing useful — fingerprint the listener before deciding whether it belongs on a public address.

## CHECK

```sh
nc -vz -w 3 TARGET 4449
```

## SEE ALSO

- iana — [IANA port registry — 4449 (privatewire)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=4449) (iana.org)

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HTML: <https://whatport.net/4449/> · JSON: <https://whatport.net/4449.json> · full dataset: <https://whatport.net/ports.json>