Select ALL protection goals a VPN can support directly through the mechanisms described in the course.

### Why this is right\n- **Confidentiality through encryption** is true: encryption makes protected traffic unreadable to an observer without the relevant keys.\n- **Integrity through checks that detect packet changes** is true: authentication checks can reveal tampering.\n- **Authentication of a peer or user** is true: VPN setup can verify who is connecting.\n\n### The concept\nThese are distinct security goals. Confidentiality concerns disclosure, integrity concerns unauthorized change, and authentication establishes identity. Availability means authorized users can access services when needed, but a VPN cannot guarantee service during an Internet or gateway outage. Redundancy and recovery planning can reduce outages.\n\n### The other options\n- **Guaranteed availability during an Internet outage**: VPN encryption cannot keep a failed network link working.\n\n### Remember\nEncryption primarily supports confidentiality; integrity and availability require separate consideration.