Port 4951PWG Web-based Imaging Management Service (WIMS)

PWG WIMS is a web-services management interface for imaging devices such as printers and multifunction peripherals.

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

also known as pwgwims, WIMS, Web-based Imaging Management Service

Technical Details

what runs on :4951

WIMS is a PWG-defined device-management service using web-service messaging: requests and responses are represented as SOAP/XML carried over HTTP, typically over TCP. It is a management API rather than a general-purpose web site, and does not use a distinct binary framing protocol. IANA lists both TCP and UDP for the service, though the HTTP/SOAP management endpoint is the relevant documented usage; do not assume that an open UDP port speaks the same protocol.

Security Information

exposure of :4951

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 1,604 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

WIMS exposes device-management operations, so an accessible endpoint may reveal device information or permit changes depending on its implementation and access controls. Keep it on a trusted management network rather than exposing it to the internet; HTTP does not encrypt traffic by default, and protection depends on the deployment.

Record

iana registry entry

port: :4951
service: PWG Web-based Imaging Management Service (WIMS)
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services
usage: This port is assigned to the Printer Working Group’s Web-based Imaging Management Service, intended for managing imaging devices. Engineers are most likely to encounter it on a WIMS-capable printer or management system; it is uncommon in internet-wide scans.
lookups: 0rank 993
added: 2026-10-06
updated: 2026-10-06
references: IANA service name registry — port 4951

Something wrong?

This record is maintained by the engineers who use port 4951. 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 2026-10-06.

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edit this record →back to the registry

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :4951PWG Web-based Imaging Management Service (WIMS)

Technical Details

Security Information

Related Ports

Port 4951PWG Web-based Imaging Management Service (WIMS)