Port 5231Cruse Scanner Remote Control

TCP port 5231 is assigned for remote control of scan software used with Cruse scanners.

transport: tcp
in transit: cleartext
assignment: official
risk: 1/10
lookups: 0

also known as crusecontrol

Technical Details

what runs on :5231

Cruse Scanner Remote Control is registered on port :5231 over tcp to Cruse Spezialmaschinen GmbH, assigned August 2014. We don't have a technical write-up for it beyond the IANA registry entry.

In nmap's internet-wide scan data this port is never observed open, so if it's open on your network it's more likely a custom or misconfigured service than the registered one.

find what's listening on :5231

this machine

# linux
sudo ss -tlpn 'sport = :5231'

# macos / bsd
sudo lsof -nP -i :5231

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :5231

another host

nmap -sV -p T:5231 <host>

run it? the handshake, the implementations you meet in the wild and the flags that matter come from the engineers who do.

add technical details

Security Information

exposure of :5231

risk score

1/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp

every listening transport is another surface to filter at the edge

security overview

no security notes recorded for :5231 yet

known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.

Record

iana registry entry

port: :5231
service: Cruse Scanner Remote Control
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: The assignment is for remote control of scan software for Cruse scanners and is held by Cruse Spezialmaschinen GmbH. There is no scan evidence here that it is commonly exposed on the public internet.
lookups: 0rank 993
added: 2026-10-07
updated: 2026-10-07
references: IANA service name registry — port 5231

Something wrong?

This record is maintained by the engineers who use port 5231. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-07.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

browse categories →

ports registered around :5231, by lookups.

port	service	proto	category	risk	views
:5247	CAPWAP Data	UDP	Network Services	caution	17.9k
:5223	XMPP over SSL	TCPtls	Security	caution	16.3k
:5246	CAPWAP Control	UDP	Network Services	caution	13.2k
:5269	XMPP Server Connection	TCP	Network Services	caution	12.8k
:5222	XMPP Client Connection	TCP	Network Services	caution	11.7k
:5190	ICQ & AIM	TCP	Voice and Chat	caution	8.5k
:5176	ConsoleWorks UI	TCP	Security	caution	6.0k
:5168	SCTE 30 Connection	TCPUDP	Media	safe	0

risk mix of the 8 listed

safe13%
caution88%

1 of 8 encrypted

Port :5231Cruse Scanner Remote Control

Technical Details

Security Information

Related Ports

Port 5231Cruse Scanner Remote Control