Port 5253Kohler Power Device Protocol

TCP/5253 is assigned to Kohler Power Device Protocol; public details about its use and behavior are scarce.

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

also known as kpdp

Technical Details

what runs on :5253

Kohler Power Device Protocol is registered on port :5253 over tcp to Bill Gross, assigned November 2010. 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 :5253

this machine

# linux
sudo ss -tlpn 'sport = :5253'

# macos / bsd
sudo lsof -nP -i :5253

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :5253

another host

nmap -sV -p T:5253 <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 :5253

risk score

1/ 10safe

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

iot averages 3.5 across 165 ports — this one sits 2.5 below.

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 :5253 yet

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

Record

iana registry entry

port: :5253
service: Kohler Power Device Protocol
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: IoT
usage: IANA assigns this port to Kohler Power Device Protocol and lists Bill Gross as the registrant. Publicly established details about what software listens here or how the protocol works are not available.
lookups: 0rank 993
added: 2026-10-07
updated: 2026-10-07
references: IANA service name registry — port 5253

Something wrong?

This record is maintained by the engineers who use port 5253. 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

all 165 in iot →

the 8 most looked-up other ports in iot — 165 ports carry that label.

port	service	proto	category	risk	views
:6543	Jetnet	UDP	Network Services	caution	65.3k
:3233	WhiskerControl Protocol	TCPUDP	Network Services	caution	61.9k
:9600	Omron FINS Communication	UDP	Network Services	caution	33.2k
:4840	OPC UA TCP	TCPUDP	Network Services	caution	26.6k
:5678	Mikrotik MNDP	UDP	Network Services	caution	24.7k
:4843	OPC UA over TLS/SSL	TCPUDPtls	Security	caution	24.6k
:5001	Slingbox	TCP	Streaming	caution	22.4k
:15000	Hypack Data Acquisition	TCP	Network Services	caution	21.4k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :5253Kohler Power Device Protocol

Technical Details

Security Information

Related Ports

Port 5253Kohler Power Device Protocol