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1526

Oracle Database

High Risk

TCP — Database

Port Overview

Port Number 1526
Service Name Oracle Database
Transport Protocol TCP
Category Database
Security Risk High
Port Range Registered (1024-49151)

What is Port 1526?

Port 1526 is an alternative listener port used by Oracle Database, alongside the primary port 1521. Some Oracle configurations and older versions use this port for database connections. Administrators should secure this port with the same measures applied to port 1521.

TCP Database

Security Considerations

Port 1526 (Oracle Database) is classified as high risk. This port is a common target for automated scanning and brute-force attacks. If you must expose it, restrict access to known IP addresses.

Recommendation: Use firewall rules to whitelist trusted IPs. Enable rate limiting and intrusion detection.

Related Ports — Database

66 Oracle SQL*NET 118 SQL Services 156 SQL Service 210 ANSI Z39.50 635 RLZ DBase 800 mdbs_daemon 999 Applix 1433 MS SQL
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