# WHATPORT(1183)

## NAME

port 1183 — llsurfup-http — Registered to "LL Surfup HTTP" and effectively never seen in the wild.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA lists 1183 for both TCP and UDP under the service name llsurfup-http, described only as "LL Surfup HTTP", with no assignee recorded and no public protocol specification. There is no maintained product, RFC, or open-source implementation behind the name that can be pointed at today. If 1183 is listening on a host you administer, the registration tells you nothing useful — identify the process locally rather than trusting the registry name.

## EXPOSURE

**Expose with care.** An unexpected listener here is an unidentified service, not a known protocol; find the owning process before deciding anything about exposure.

## CHECK

```sh
sudo lsof -nP -iTCP:1183 -sTCP:LISTEN
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml) (iana.org)

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HTML: <https://whatport.net/1183/> · JSON: <https://whatport.net/1183.json> · full dataset: <https://whatport.net/ports.json>