* - Exponential backoff for repeated failures
 * - Account lockout after threshold
 * - Automatic cleanup of old entries
 */
public class AuthenticationRateLimiter implements AutoCloseable {

    private static final Logger log = LoggerFactory.getLogger(AuthenticationRateLimiter.class);

    // Rate limiting configuration
    private final int maxAttemptsPerAccount;
    private final int maxAttemptsPerIp;

import jcifs.smb.SmbException;

/**
 * Test cases for AuthenticationRateLimiter
 */
public class AuthenticationRateLimiterTest {

    private AuthenticationRateLimiter rateLimiter;

    @BeforeEach
    public void setUp() {
        // Create rate limiter with test-friendly settings
        rateLimiter = new AuthenticationRateLimiter(3, // max attempts per account
                5, // max attempts per IP