Port 20005BTicino OpenWebNet

OpenWebNet protocol used by BTicino for electric-network and home-automation communications.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 7/10
lookups: 0

Technical Details

what runs on :20005

OpenWebNet is a BTicino application protocol carried over TCP and, in some implementations, UDP on port 20005. Its messages are textual telegrams using # and * delimiters, commonly in forms such as #WHO*WHAT*WHERE##; a gateway maintains the session and returns protocol responses or acknowledgements. The exact command set depends on the connected My Home installation and gateway model. It is generally a local-network protocol rather than a public Internet service, and native transport encryption should not be expected.

Security Information

exposure of :20005

risk score

7/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

iot averages 3.5 across 159 ports — this one sits 3.5 above.

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 · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Internet exposure should be avoided: the service can provide access to building-automation state and control functions, and OpenWebNet traffic is not protected by modern TLS by default. Restrict it to trusted automation networks, use the gateway's authentication features where available, and place remote access behind a VPN or secure management gateway rather than forwarding port 20005.

Record

iana registry entry

port: :20005
service: BTicino OpenWebNet
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 7/10risk
category: IoT
usage: This port is used by BTicino My Home and related Legrand home-automation gateways, controllers, and integration software. Engineers usually encounter it on residential or building-automation networks where software reads sensor state or controls lighting, shutters, heating, and other devices.
lookups: 0rank 993
added: 2026-08-25
updated: 2026-09-22
references: IANA service name registry — port 20005

Something wrong?

This record is maintained by the engineers who use port 20005. 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 2026-09-22.

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 159 in iot →

the 8 most looked-up other ports in iot — 159 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 :20005BTicino OpenWebNet

Technical Details

Security Information

Related Ports

Port 20005BTicino OpenWebNet