Port 3306 — MySQL

TCP · Port 3306/TCP is used for MySQL, a popular relational database management system. It allows remote access to the database for querying and data manipulation. Security relevance lies in configuring proper authentication and authorization mechanisms to prevent unauthorized access.

Port Number: 3306
Service Name: MySQL
Protocol: TCP
Common Software: mysqld, mariadbd

Security Notes

Never expose MySQL to the internet. Bind to localhost only. Use strong passwords.

FAQ

What is port 3306 used for?

Port 3306 is used for MySQL. Port 3306/TCP is used for MySQL, a popular relational database management system. It allows remote access to the database for querying and data manipulation. Security relevance lies in configuring proper authentication and authorization mechanisms to prevent unauthorized access. Common software: mysqld, mariadbd.

Is port 3306 dangerous to leave open?

Never expose MySQL to the internet. Bind to localhost only. Use strong passwords.

How do I check if port 3306 is open?

Use nmap: nmap -p 3306 <target> or check locally: ss -tlnp | rg 3306