# WHATPORT(9500)

## NAME

port 9500 — ismserver — Registered as ismserver, a private assignment with no public specification.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA lists 9500 for both TCP and UDP as ismserver, an individual registration with no published protocol description, and nmap carries the same bare name. There is no open specification to read and no widely deployed open-source daemon that defaults here, so the registration tells you little. Being a round number just below the ephemeral range, 9500 is also a popular arbitrary choice for internal application listeners.

## EXPOSURE

**Expose with care.** Without a known protocol there is no reason to trust it; identify the process and apply that service's rules.

## CHECK

```sh
nmap -sV -Pn -p 9500 TARGET
```

## SEE ALSO

- iana — [IANA port registry — 9500 (ismserver)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=9500) (iana.org)
- source — [nmap-services (port frequency and name table)](https://github.com/nmap/nmap/blob/master/nmap-services) (github.com)

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HTML: <https://whatport.net/9500/> · JSON: <https://whatport.net/9500.json> · full dataset: <https://whatport.net/ports.json>