Employees located off-site must have access to company resources in order to complete their assigned tasks. These employees utilize a solution that allows remote access without interception concerns. Which of the following best describes this solution?

A Virtual Private Network (VPN) is the best solution because it creates a secure, encrypted tunnel over an untrusted network (like the internet) for remote users to access internal company resources. This encryption protects data from interception, addressing the "without interception concerns" requirement. A proxy server acts as an intermediary for requests from clients seeking resources from other servers, primarily for filtering, caching, or anonymity, not secure remote access for internal resources. An NGFW (Next-Generation Firewall) provides advanced threat protection but is typically a perimeter defense, not a direct remote access solution for individual users. A security zone is a logical segmentation of a network for applying security policies, not a remote access technology itself.