Cisco Certified Support Technician (CCST) CybersecurityNetwork SecurityHard
A security engineer is configuring a web server to ensure that all communication between clients and the server is encrypted and authenticated. The server needs to present a digital certificate to clients to verify its identity, and clients must also verify the server's certificate. Which cryptographic protocol is essential for establishing this secure communication channel for web traffic?
- AFile Transfer Protocol Secure (FTPS)
- BTransport Layer Security (TLS)
- CSecure Shell (SSH)
- DInternet Protocol Security (IPsec)
Show answer & explanationAnswer & explanation
Correct answer: B. Transport Layer Security (TLS)
Transport Layer Security (TLS), and its predecessor SSL, are cryptographic protocols designed to provide communications security over a computer network. TLS is used to encrypt and authenticate web traffic (HTTPS) by using digital certificates to verify server identity and establishing an encrypted session.
Why the other options are wrong
- A. FTPS is used for secure file transfer, not for securing general web communication between clients and a web server.
- C. SSH is used for secure remote access to command-line interfaces, not primarily for securing general web traffic between clients and a web server.
- D. IPsec provides secure communication at the IP layer, often used for VPNs, but TLS is the standard for securing application-layer web traffic.
Transport Layer Security (TLS)
A cryptographic protocol designed to provide communications security over a computer network, widely used for securing web traffic (HTTPS).
- Successor to SSL (Secure Sockets Layer).
- Provides encryption, authentication, and data integrity.
- Uses digital certificates for server identity verification.
Memory trick: TLS Takes care of Traffic's Tunnels.