Port 1525Prospero Directory Service

Prospero distributed directory service for browsing virtual file-system and directory information.

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

also known as prospero-np

1 other service is registered on port 1525. compare all 2 →

Technical Details

what runs on :1525

Prospero is a client/server directory protocol assigned to both TCP and UDP on this non-privileged service port. A client queries a Prospero server for directory entries, attributes, and links; the returned links can refer to resources retrieved through other protocols. The protocol is not a modern encrypted application protocol and deployments may use access controls specific to the server and exported directories.

Security Information

exposure of :1525

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 2.7 across 1,222 ports — this one sits 0.7 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

Prospero traffic is ordinarily unencrypted, so directory queries and responses can be observed or modified in transit. An exposed or obsolete server may disclose directory structure or links and should generally be restricted to trusted networks; the service is sufficiently uncommon that an unexpected listener warrants investigation.

Record

iana registry entry

port: :1525
service: Prospero Directory Service
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services
usage: This port serves the Prospero distributed directory service, which presents directory information and links through a virtual file-system model. It was mainly encountered in historical research and Unix environments; it is uncommon on modern networks.
lookups: 0rank 994
added: 2026-09-17
updated: 2026-09-17
references: IANA service name registry — port 1525

Something wrong?

This record is maintained by the engineers who use port 1525. 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 2026-09-17.

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

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :1525Prospero Directory Service

Technical Details

Security Information

Related Ports

Port 1525Prospero Directory Service