Config.prp = new Properties(prp);
        try {
            Config.prp.putAll(System.getProperties());
        } catch (final SecurityException se) {
            if (LogStream.level > 1) {
                log.println("SecurityException: jcifs.smb1 will ignore System properties");
            }
        }
    }

    /**
     * Load the <code>Config</code> with properties from the stream

        // Verify witness service is authorized
        if (!isAuthorizedWitnessServer(witnessServer)) {
            throw new SecurityException("Unauthorized witness server: " + witnessServer);
        }
    }
    
    public void validateNotification(WitnessNotification notification) throws SecurityException {
        // Validate notification authenticity

     * This is a simplified test that verifies the basic flow without full NTLM protocol simulation.
     * @throws IOException
     * @throws SecurityException
     */
    @Test
    void testSuccessfulHandshake() throws IOException, SecurityException {
        // This test is simplified to verify basic handshake behavior
        // Full NTLM handshake testing would require more complex mocking

```java
public class RdmaSecurityManager {
    public void validateMemoryAccess(RdmaMemoryRegion region, RdmaAccess requestedAccess) {
        if (!region.hasAccess(requestedAccess)) {
            throw new SecurityException("Insufficient RDMA memory access rights");
        }
    }
    
    public void validateRemoteAccess(long remoteAddress, int length, int remoteKey) {
        // Validate that remote memory access is authorized

        joinThread(q20);
    }

    private static void interruptThreadSafely(final QueryThread thread) {
        try {
            thread.interrupt();
        } catch (final SecurityException e) {
            log.error("Security exception interrupting thread", e);
        }
    }

    private static void joinThread(final Thread thread) {
        try {
            thread.join();