Port 3306 · MySQL / MariaDB

Port 3306 is MySQL / MariaDB, TCP.

MySQL and MariaDB database server default port. Should not be exposed to the internet; bind it to localhost or a private network.

Palo Alto

Create the service object for this port, then allow the App-ID on it. Restricting the rule to the port's service object keeps the rule working on a non-default port and stops the App-ID matching on other ports. Replace the placeholders with your own rule name and zones.

set service tcp-3306 protocol tcp port 3306

set rulebase security rules <rule-name> from <from-zone> to <to-zone> source any destination any application mysql service tcp-3306 action allow

Risk and exposure

Rated medium risk. Restrict this port to the sources that need it and keep the service patched; avoid exposing it to the whole internet unless the service is meant to be public.

Check it

• Linux ss -tlnp | grep :3306
• PowerShell Test-NetConnection <host> -Port 3306
• nmap nmap -p 3306 <host>

Related ports

• 5432 PostgreSQL

← Search all ports