Port 4420NVMe over Fabrics (NVMe-oF)

NVMe over Fabrics storage access, typically using NVMe/TCP to connect hosts to remote NVMe storage.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 8/10
lookups: 0

also known as NVMe/TCP

Technical Details

what runs on :4420

NVMe/TCP targets typically listen on TCP port 4420. After the TCP connection, the peers exchange NVMe/TCP initialization request and response PDUs, then carry NVMe commands and data in framed protocol data units over the stream. Hosts connect to an NVMe subsystem, commonly using discovery to find available subsystems. The registry also lists UDP, but ordinary NVMe/TCP target traffic uses TCP.

Security Information

exposure of :4420

risk score

8/ 10risk

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

system averages 2.7 across 933 ports — this one sits 5.3 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

A reachable target may expose block-storage namespaces for reading and writing, so access can reveal sensitive data or permit destructive modification. NVMe-oF should normally be restricted to trusted storage networks, with authentication and any configured encryption enabled; it should not be exposed directly to the internet.

Record

iana registry entry

port: :4420
service: NVMe over Fabrics (NVMe-oF)
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 8/10risk
category: System Virtualization
usage: This port is used by NVMe-oF targets in data-center and storage fabrics, where hosts connect to remote NVMe subsystems. In normal deployments, the active listener is typically TCP; it is not commonly exposed to the public internet.
lookups: 0rank 993
added: 2026-10-04
updated: 2026-10-04
references: IANA service name registry — port 4420

Something wrong?

This record is maintained by the engineers who use port 4420. 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 2026-10-04.

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 933 in system →

the 8 most looked-up other ports in system — 933 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 :4420NVMe over Fabrics (NVMe-oF)

Technical Details

Security Information

Related Ports

Port 4420NVMe over Fabrics (NVMe-oF)