CCNA Security

CCNA Security

1. Chapter 1

   • Concepts
     • Confidentiality
     • Integrity
     • Availability
       • : This applies to systems and to data. If the network or its data is not available to authorized users—perhaps because of a denial-of-service (DoS) attack or maybe because of a general network failure—the impact may be significant to companies and users who rely on that network as a business tool. The failure of a network generally equates to loss of revenue. Perhaps thinking of these security concepts as the CIA might help you remember them: confidentiality , integrity , and availability