TR EN
Home / Port Directory / Port 3306

Port 3306: MySQL & MariaDB Database

Port 3306 is the standard default port for MySQL and MariaDB relational database connections.

Protocol
TCP
Category
Databases
Common Services
MySQL Community Server, MariaDB, Percona

What is Port 3306 and How Does It Work?

Port 3306 is the standard default port for MySQL and MariaDB relational database connections.

Security Vulnerabilities & Attack Vectors on Port 3306

Always bind MySQL to localhost (127.0.0.1) or an internal private VPC network. Never expose 3306 publicly.

Auditing & Scanning Port 3306 with Nmap

Run the following command to check if Port 3306 is reachable and determine service fingerprints:

nmap -p 3306 --script mysql-info,mysql-empty-password

Frequently Asked Questions

How do I check if Port 3306 is open?
Use cyber-tool.org diagnostic tools or run 'nc -zv 3306' in your terminal to verify open socket connections.
Is it safe to leave Port 3306 open to the internet?
Exposing Port 3306 (MySQL & MariaDB Database) publicly introduces potential exposure. Protect it with IP whitelisting, firewalls, and encryption.