# WHATPORT(33354)

## NAME

port 33354 — Unassigned — No registered service — whatever answers here is a local choice, or a Linux ephemeral port caught mid-connection.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA lists 33354 as unassigned, and Nmap's service database has no name for it either, recording it open on roughly 0.08% of hosts in its internet-wide research scans. It also falls inside the Linux default ephemeral range (32768-60999), so a socket seen here is frequently the client end of an outbound connection rather than a server. There is no protocol you can assume from the number alone.

## EXPOSURE

**Expose with care.** An unidentified listener on an unregistered high port is a fingerprinting job before it is a firewall decision — find out what process owns it, then decide.

## CHECK

```sh
nmap -sV -Pn -p 33354 TARGET
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry — 33354](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=33354) (iana.org)
- source — [nmap/nmap — nmap-services (port frequency database)](https://github.com/nmap/nmap/blob/master/nmap-services) (github.com)
- docs — [Linux kernel — ip-sysctl (ip_local_port_range defaults 32768-60999)](https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt) (kernel.org)

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HTML: <https://whatport.net/33354/> · JSON: <https://whatport.net/33354.json> · full dataset: <https://whatport.net/ports.json>