The statement is false. While firewalls with ACLs are indeed a preventive control used to define rules that allow or deny traffic based on state, port, and protocol, they are not specifically designed to protect against SQL injection attacks. SQL injection is a type of attack that exploits vulnerabilities in an application's database query software when user input is not properly sanitized. Preventing SQL injection requires input validation, parameterized queries, and proper coding practices within the application itself rather than at the network perimeter where firewalls operate.