A Linux administrator needs to establish a secure, performant, and modern point-to-point VPN tunnel between two servers to protect data in transit. The solution should be lightweight, integrated into the Linux kernel, and use state-of-the-art cryptography. Which of the following technologies best meets these requirements?
OpenSSL
LUKS2
GPG
WireGuard
WireGuard is the correct choice as it is a modern, high-performance VPN protocol designed to be simple and secure. It is integrated directly into the Linux kernel, which provides significant performance advantages, and it uses modern, state-of-the-art cryptography to protect data in transit. OpenSSL is a cryptographic library that provides the building blocks for secure communication (like TLS) but is not a VPN protocol itself. GPG is used for encrypting and signing data at rest, such as files and emails, not for creating network tunnels. LUKS2 is a standard for block device encryption (full-disk encryption), which protects data at rest on a storage device, not data in transit over a network.
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