juniorMySQL
Default MySQL Port and Security
Updated May 4, 2026
Short answer
Standard port is 3306.
Deep explanation
MySQL communicates over TCP/IP on 3306. For security, this is often changed in the configuration or restricted by firewalls.
Real-world example
Configuring an application to connect to the database via port 3306.
Common mistakes
- Exposing port 3306 to the public internet.
Follow-up questions
- How to check the current port?