Port 4172PC-over-IP (PCoIP)

PCoIP carries encrypted remote-desktop sessions between clients and virtual or hosted desktops over TCP and UDP port 4172.

inRemote Access Virtualization

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

Technical Details

what runs on :4172

PCoIP is a remote-display protocol for sending desktop graphics, audio, and input between a client and a remote computer. Deployments use TCP 4172 for session setup and related control traffic, and UDP 4172 for the interactive display session; both directions may need to pass through firewalls. It is commonly used with VMware Horizon and PCoIP gateways, and supports encrypted sessions by default.

Security Information

exposure of :4172

risk score

7/ 10risk

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

remote access averages 3.7 across 201 ports — this one sits 3.3 above.

in transit

encrypted

payloads are protected on the wire

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

An exposed PCoIP endpoint can provide a path to a remote desktop, so restrict access to intended clients or gateways and rely on the deployment's authentication and authorization controls. Although session traffic is encrypted, encryption does not make an exposed desktop endpoint safe from credential attacks or exploitation of the endpoint software; avoid exposing desktop agents directly to the public internet when a controlled gateway is available.

Record

iana registry entry

port: :4172
service: PC-over-IP (PCoIP)
transport: TCPUDP
encryption: tls / encrypted
assignment: iana registered
risk: 7/10risk
category: Remote Access Virtualization
usage: This port is used by Teradici/HP PCoIP software and hardware, notably VMware Horizon deployments and hosted desktop services such as Amazon WorkSpaces. Engineers commonly encounter it between a PCoIP client and a desktop agent or PCoIP gateway.
lookups: 0rank 993
added: 2026-10-03
updated: 2026-10-03
references: IANA service name registry — port 4172

Something wrong?

This record is maintained by the engineers who use port 4172. 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 2026-10-03.

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edit this record →back to the registry

Related Ports

all 201 in remote access →

the 8 most looked-up other ports in remote access — 201 ports carry that label.

port	service	proto	category	risk	views
:8000	Intel Remote Desktop / Alternate HTTP Port	TCP	Web Services	safe	84.3k
:8888	D2GS Admin Console	TCP	Remote Access	caution	83.7k
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:5938	TeamViewer	TCPUDP	Remote Access	caution	65.0k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:8008	IBM HTTP Server Admin	TCP	Web Services	caution	58.3k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:23	Telnet	TCP	Remote Access	caution	34.8k

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :4172PC-over-IP (PCoIP)

Technical Details

Security Information

Related Ports

Port 4172PC-over-IP (PCoIP)