Port 3982ESRI Image Server

Port 3982 is assigned to ESRI Image Server traffic over TCP and UDP.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 4/10
lookups: 0

also known as eis, ArcGIS Image Server

Technical Details

what runs on :3982

ESRI Image Server uses a proprietary image-service protocol on TCP port 3982 in deployments configured for the legacy service. The protocol carries requests for imagery and related image-service operations rather than ordinary HTTP web traffic; UDP is present in the IANA assignment but is not generally expected for normal client access. Encryption is not inherent to the legacy port, and modern ArcGIS deployments may instead front services with HTTPS on other configured ports.

Security Information

exposure of :3982

risk score

4/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

web services averages 3.2 across 187 ports — this one sits 0.8 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 this legacy service directly to the Internet unless it is required and protected by network controls. An exposed listener can disclose imagery and service metadata and may expand the attack surface of an old, specialized server; restrict access to trusted clients, monitor for unexpected connections, and prefer an authenticated HTTPS-fronted deployment where supported.

Record

iana registry entry

port: :3982
service: ESRI Image Server
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 4/10caution
category: Web Services
usage: This port is associated with the legacy ESRI Image Server product, now part of the ArcGIS platform, and is encountered on hosts serving raster imagery and image services. It is uncommon on general-purpose ArcGIS Server deployments, which more often expose web services on ports such as 6080 or 6443.
lookups: 0rank 993
added: 2026-09-13
updated: 2026-09-22
references: IANA service name registry — port 3982

Something wrong?

This record is maintained by the engineers who use port 3982. 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
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edit this record →back to the registry

Related Ports

all 187 in web services →

the 8 most looked-up other ports in web services — 187 ports carry that label.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:8000	Intel Remote Desktop / Alternate HTTP Port	TCP	Web Services	safe	84.3k
:8888	NewsEDGE	TCPUDP	Web Services	caution	83.3k
:8888	HTTP Alternative Port	TCP	Web Services	caution	76.5k
:8888	GNUmp3d Streaming HTTP	TCP	Web Services	caution	76.3k
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:80	HTTP	TCPUDP	Web Services	caution	67.3k

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :3982ESRI Image Server

Technical Details

Security Information

Related Ports

Port 3982ESRI Image Server