Plugins Helping MySQL Secure Installation: CONNECTION_CONTROL
In this mysql server tutorial we'll walk you through one of the mysql server plugins that help your mysql server be more secure and assist with a mysql secure installation.
The mysql plugin in question is CONNECTION_CONTROL and CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS.
The MySQL server plugin CONNECTION_CONTROL checks incoming connection attempts and if necessary, adds a delay to server responses.
The MySQL server plugin called CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS contains detailed information on failed login attempts and it helps users in monitoring and similar operations.
The installation of the plugins is very simple and straightforward - it can be done with a SQL query or by entering a couple of lines into my.cnf.
Install it via a SQL query like so:
1) For the connection_control plugin run a SQL query like the SQL query below:
INSTALL PLUGIN CONNECTION_CONTROL SONAME 'connection_control.so';
2) For the connection_control_failed_login_attempts plugin run a SQL query like the one below:
INSTALL PLUGIN CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS SONAME 'connection_control.so';
If you're implementing the mysql plugin via my.cnf or my.ini, add the following lines into your file:
2.1. plugin-load-add=connection_control.so
2.2. connection-control=FORCE_PLUS_PERMANENT
2.3. connection-control-failed-login-attempts=FORCE_PLUS_PERMANENT
The line in step 2.1. loads the CONNECTION_CONTROL library.
The line in step 2.2. assures that the MySQL server would only run with the MySQL plugin.
The line in step 2.3. prevents the MySQL server from running without the CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS plugin.
Below you will also find some of the most frequent sql interview questions and answers for experienced software engineers and DBAs:
Q: In a web application security context, what does a web application firewall do?
A: A web application firewall (WAF) protects web applications from attacks like the sql injection attack, cross site scripting, and others.
Q: What are the owasp top 10 2021 threats?
A: The owasp top 10 threats are as follows:
1) Broken Access Control
2) Cryptographic Failures
3) Injection
4) Insecure Design
5) Security Misconfiguration
6) Vulnerable and Outdated Components
7) Identification and Authentification Failures
8) Software and Data Integrity Failures
9) Security Logging and Monitoring Failures
10) SSRF.
Q: What's the most common location to find the mysql my.cnf file?
A: /etc/my.cnf.
Q: How dangerous is SQL injection? How to protect our web applications from this attack?
A: SQL injection is one of the most dangerous attacks targeting applications today. To protect your mysql server and web applications from sql injection, sanitize inputs and never provide user input to a database.
Q: What is the most frequently used type of SQL index?
A: A B-tree SQL index is used the most frequently in mysql server as well as other RDBMS.
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