Your organization is launching an online customer portal hosted on a single domain. Management requires that traffic between clients and the web server be encrypted and that users' browsers show a green padlock without warning messages. As the Linux administrator, which of the following should you deploy on the Apache server to meet these requirements?
Browsers display the green padlock only when the server presents an SSL/TLS certificate that chains back to a trusted public Certificate Authority. A CA-signed TLS certificate enables HTTPS by encrypting the session and authenticating the server's identity. A self-signed certificate will encrypt traffic but triggers security warnings because no third-party has validated the site. An SSH host key secures remote shell access, not web traffic. A standalone digital signature file can verify integrity but does not provide an encrypted transport channel.
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What is the difference between SSL and TLS?
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What role does a Certificate Authority (CA) play in SSL/TLS certificates?
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What is the difference between a self-signed certificate and one from a CA?