MySQL has a MySQL 5.7 Secure Deployment Guide and MySQL 8.0 Secure Deployment Guide. If you do receive a report on your network/constituency take action to filter out traffic to your MySQL instance and make sure to implement authentication on the server. It is unlikely that you need to have your MySQL server allowing for external connections from the Internet (and thus a possible external attack surface). You can track latest MySQL scan results on the Shadowserver Dashboard. You can replicate our query with an nmap mysql-info scan: We do not perform any intrusive checks to discover the level of access to any databases that is possible.Īside from all of IPv4 space, we also scan IPv6 based on hitlists.
This includes both TLS and non-TLS responses.
We scan by issuing a MySQL connection request on port 3306/TCP and collecting server responses that respond with a MySQL Server Greeting. These are instances that respond to our request with a Server Greeting. If the user wants to verify the port or see if MySQL is using a different port, it can be done by running a short SQL query.This report identifies accessible MySQL server instances on port 3306/TCP. Even though MySQL default port is 3306, it doesn’t necessarily mean that MySQL service will always use that port. On the other hand, if it is required to open port 3306, the user has to ensure to restrict the IP addresses which can access it so that the connection can’t be accessed by untrusted hosts. One of the secure options includes using an SSH tunnel. If the user needs to connect to the database remotely, there are many other secure options, instead of opening the port 3306. In general, port 3306 shouldn’t be opened since it could make the server vulnerable to attack. Let us see if there are any vulnerabilities while using this default port − It is a TCP, i.e Transmission Control Protocol. 3306 Port Numberģ306 port number is used by MySQL protocol to connect with the MySQL clients and utilities such as ‘mysqldump’.
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