Port 22125dCache Access Protocol

dCache Access Protocol endpoint for direct client access to files in a dCache storage system.

transport: tcp
in transit: cleartext
assignment: official
risk: 5/10
lookups: 0

also known as dcap

Technical Details

what runs on :22125

DCAP is a dCache-specific client access protocol carried over TCP. A client connects to the dCache door, performs protocol negotiation and authentication as configured by the site, and requests file operations; the door may arrange access to the pool holding the file, with data-transfer endpoints handled by the dCache deployment. TCP port 22125 is the conventional DCAP door port. DCAP itself does not provide TLS encryption by default, and related dCache doors and pool-transfer ports may also be present on separately configured ports.

Security Information

exposure of :22125

risk score

5/ 10caution

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

file transfer averages 3.6 across 158 ports — this one sits 1.4 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

every listening transport is another surface to filter at the edge

security overview

A DCAP endpoint should normally be restricted to trusted site or grid networks rather than exposed to the public internet. Depending on configuration, access may require authentication and authorization, but the protocol is not encrypted by default, so file contents and credentials or authentication exchanges may be exposed to network observers; limit source addresses and use a secured transport or a more modern dCache access method where available.

Record

iana registry entry

port: :22125
service: dCache Access Protocol
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 5/10caution
category: File Transfer System
usage: This port is used by the dCache DCAP door, allowing dCache clients to access files stored in dCache pools. Engineers typically encounter it in research, high-performance computing, and data-grid environments using dcap:// URLs.
lookups: 0rank 994
added: 2026-09-15
updated: 2026-09-15
references: IANA service name registry — port 22125

Something wrong?

This record is maintained by the engineers who use port 22125. 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 2026-09-15.

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Related Ports

all 158 in file transfer →

the 8 most looked-up other ports in file transfer — 158 ports carry that label.

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:17500	Dropbox LAN Sync	TCPUDP	File Transfer	caution	43.7k
:548	Apple Filing Protocol	TCP	File Transfer	caution	36.8k
:7000	Vuze HTTPS Tracker	TCPtls	Security	caution	28.9k
:1337	PowerFolder P2P	TCP	Security	caution	27.1k
:9001	SharePoint Authoring		Web Services	caution	26.3k
:8080	FilePhile Relay	UDP	File Transfer	caution	25.6k
:1337	WASTE Encrypted Sharing	TCP	Security	caution	22.9k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :22125dCache Access Protocol

Technical Details

Security Information

Related Ports

Port 22125dCache Access Protocol