Port 1525Oracle service

Oracle database networking service associated with Oracle Net or SQL*Net.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 8/10
lookups: 0

also known as orasrv, Oracle Net, SQL*Net

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

Technical Details

what runs on :1525

The IANA registry lists TCP and UDP, but Oracle Net listeners are normally deployed over TCP. A client sends an Oracle Net/TNS connect request, and the listener negotiates or redirects the connection to a configured database service, dedicated server, or dispatcher; subsequent database protocol traffic follows that negotiation. Port 1525 is an alternate or legacy Oracle listener port, while TCP 1521 is the usual modern default. Oracle Net encryption is optional and depends on the server and client configuration, commonly through native network encryption or TCPS on a separately configured endpoint.

Security Information

exposure of :1525

risk score

8/ 10risk

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

databases averages 3.9 across 135 ports — this one sits 4.1 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

An internet-facing Oracle listener exposes database infrastructure to service enumeration, connection attempts, credential attacks, and vulnerabilities specific to the Oracle Database version and listener configuration. It should normally be restricted to trusted application hosts or placed behind a VPN or firewall; require strong authentication, disable unnecessary services, and use Oracle Net encryption where sensitive traffic crosses untrusted networks.

Record

iana registry entry

port: :1525
service: Oracle service
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 8/10risk
category: Databases
usage: This port may host an Oracle Net listener, particularly in legacy or manually configured deployments; modern Oracle installations commonly use TCP 1521 instead. Engineers may also encounter it as an alternate Oracle listener port or as an unassigned service using the number for another purpose.
lookups: 0rank 993
added: 2026-09-10
updated: 2026-09-22
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 2026-09-22.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

all 135 in databases →

the 8 most looked-up other ports in databases — 135 ports carry that label.

port	service	proto	category	risk	views
:8882	Atlasz Secure App Server	TCP	Web Services	caution	66.9k
:9001	ETL Service Manager	TCPUDP	Databases	caution	28.6k
:2484	Oracle SSL Listener	TCPUDPtls	Security	caution	25.0k
:5495	Applix TM1 Admin	TCP	Databases	caution	24.8k
:591	FileMaker Web Sharing	TCP	Web Services	caution	23.1k
:1521	Oracle TNS Listener	TCP	Security	caution	19.6k
:21001	AMLFilter Admin	TCP	Security	caution	19.2k
:18206	Audition FAM DB	TCPUDP	Databases	caution	19.1k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :1525Oracle service

Technical Details

Security Information

Related Ports

Port 1525Oracle service