# WHATPORT(1107)

## NAME

port 1107 — ISOIPSIGPORT-2 — The second of the two registered ISO IP signalling ports, and just as rare as the first.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA registers 1107 as isoipsigport-2, the companion to 1106. As with its pair, no public protocol document accompanies the registration and Nmap's service-frequency data shows it open on a negligible share of hosts. If you see it, enumerate the listening process rather than trusting the registry name.

## EXPOSURE

**Expose with care.** Unknown service on an unused registered port — identify it locally before it faces any untrusted network.

## CHECK

```sh
sudo lsof -nP -iTCP:1107 -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/1107/> · JSON: <https://whatport.net/1107.json> · full dataset: <https://whatport.net/ports.json>