Port 2222EtherNet/IP

EtherNet/IP industrial control I/O traffic, typically using UDP port 2222 for real-time cyclic data.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 9/10
lookups: 0

also known as EtherNet/IP-1, EtherNet/IP I/O, CIP I/O, EtherNet-IP-1

1 other service is registered on port 2222. compare all 2 →

Technical Details

what runs on :2222

EtherNet/IP uses the Common Industrial Protocol (CIP) over Ethernet. In normal deployments, UDP/2222 carries cyclic or event-driven implicit I/O packets, using connection identifiers and sequence information; traffic may be unicast or multicast. Connections are commonly established with CIP services over TCP/44818, although the IANA assignment lists both TCP and UDP for this historic EtherNet/IP I/O entry. The I/O traffic is normally unencrypted and unauthenticated.

Security Information

exposure of :2222

risk score

9/ 10critical

assume it is being scanned right now. do not expose this port to untrusted networks; put a vpn or bastion in front of it.

system averages 2.7 across 977 ports — this one sits 6.3 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

Do not expose EtherNet/IP directly to the Internet. An attacker with network access may enumerate controllers and devices, disrupt I/O connections, or send unauthorized control and process data; the protocol generally provides no cryptographic confidentiality or strong authentication. Restrict it to segmented industrial networks and use firewalls, allowlists, secure remote access, and vendor-supported security controls.

Record

iana registry entry

port: :2222
service: EtherNet/IP
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 9/10critical
category: System IoT
usage: EtherNet/IP is used by PLCs, I/O adapters, drives, robots, and other industrial automation equipment. Port 2222 is commonly used for real-time implicit I/O traffic, while explicit CIP messaging and connection setup usually use TCP port 44818.
lookups: 0rank 993
added: 2026-09-21
updated: 2026-09-22
references: IANA service name registry — port 2222

Something wrong?

This record is maintained by the engineers who use port 2222. 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 977 in system →

the 8 most looked-up other ports in system — 977 ports carry that label.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:4664	Google Desktop Search	TCP	System	caution	67.2k
:8008	IBM HTTP Server Admin	TCP	Web Services	caution	58.3k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:9080	WebSphere HTTP Transport (default)	TCP	Web Services	caution	51.6k
:23	Telnet	TCP	Remote Access	caution	34.8k
:12489	NSClient Monitoring Agent	TCP	Network Services	caution	30.0k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :2222EtherNet/IP

Technical Details

Security Information

Related Ports

Port 2222EtherNet/IP