Port 4684RFID Reader Protocol 1.0

A reader-to-software protocol for configuring RFID readers and exchanging tag-read data.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

also known as rfid-rp1, EPCglobal Reader Protocol

Technical Details

what runs on :4684

The assignment covers TCP and UDP, but Reader Protocol deployments use a client/server connection over TCP: software sends commands to a reader and receives responses and read notifications. The protocol uses XML-formatted messages for reader operations such as configuration and inventory; it is distinct from EPCglobal's later Low Level Reader Protocol, commonly assigned port 5084. The IANA port assignment alone does not imply that a host listening on UDP implements the protocol.

Security Information

exposure of :4684

risk score

2/ 10safe

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

network services averages 2.6 across 1,560 ports — this one sits 0.6 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 · udp

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

security overview

Reader traffic can expose tag-read data and may allow changes to reader behavior or configuration. The protocol is not normally protected by transport encryption, so keep readers on a restricted device network and do not expose this port to the public internet; the assignment is rarely seen in internet-wide scans.

Record

iana registry entry

port: :4684
service: RFID Reader Protocol 1.0
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services IoT
usage: This port is assigned to RFID Reader Protocol 1.0, used by software communicating with RFID readers. Engineers are most likely to encounter it on an RFID reader or middleware network, rather than on a general-purpose internet host.
lookups: 0rank 993
added: 2026-10-05
updated: 2026-10-05
references: IANA service name registry — port 4684

Something wrong?

This record is maintained by the engineers who use port 4684. 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 2026-10-05.

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 1,560 in network services →

the 8 most looked-up other ports in network services — 1,560 ports carry that label.

port	service	proto	category	risk	views
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:6543	Jetnet	UDP	Network Services	caution	65.3k
:5938	TeamViewer	TCPUDP	Remote Access	caution	65.0k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:3233	WhiskerControl Protocol	TCPUDP	Network Services	caution	61.9k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:3128	Tatsoft Default HTTP Proxy	TCP	Web Services	caution	46.8k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :4684RFID Reader Protocol 1.0

Technical Details

Security Information

Related Ports

Port 4684RFID Reader Protocol 1.0