What Remote Access System Uses a Public IP and ACL?
Short answer
A VPN
Question
Key Takeaways
Examines the distinction between general secure protocols and dedicated remote access infrastructure, with candidates often confusing VPNs with jump servers or SSH gateways.
This question tests your understanding of enterprise remote access solutions that leverage public IPs and Access Control Lists (ACLs) for traffic filtering. The community overwhelmingly agrees that a Virtual Private Network (VPN) is the correct answer, as it securely tunnels remote users into the corporate network.
Common mistake: Jump server (C) is frequently chosen because it also provides controlled public access, but it acts as a single hardened host rather than a scalable remote access system designed for multiple staff members using ACL-based traffic segmentation.
Expert Analysis
Why the Answer Is Correct
A VPN is explicitly designed to provide secure, encrypted remote access across public networks. When deployed with a public IP address and configured with ACLs, it filters inbound connection attempts and routes authenticated traffic safely into the private LAN. CompTIA Network+ emphasizes VPNs as the standard solution for scalable, policy-driven remote workforce connectivity.
Why the Other Options Are Wrong
Secure Shell (B) offers encrypted command-line access but lacks the tunneling capabilities and centralized user management required for an organization-wide remote access system. A jump server (C) serves as a single bastion host for administrative access rather than a dedicated remote access gateway for engineering staff. An API (D) facilitates software communication and has no role in network-level remote access provisioning.
Community Comment Notes
Comment [1] and [2] highlight that a VPN concentrator aligns perfectly with public IP exposure and ACL configuration for group access. Candidates note that while SSH and jump servers provide security, they do not scale as a unified remote access platform. The consensus reinforces that VPN remains the foundational technology tested for this use case.
Official Reference
https://docs.microsoft.com/en-us/windows-server/networking/technologies/vpn/site-to-site-overview
This link opens the official vendor documentation in a new tab.
Exam Strategy
When encountering "remote access over a public IP," immediately prioritize VPN or remote access gateway concepts over endpoint protocols like SSH. Focus on keywords like "system," "staff," and "ACL," which point toward scalable infrastructure rather than single-host or application-layer tools.
Community Votes
100% of anonymous learners picked answer A. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 4 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 4
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subaie503 👍 2 Answered AA. VPN Setting up a remote access system for the engineering staff that is accessible over a public IP and secured with an Access Control List (ACL) best describes a Virtual Private Network (VPN) setup. A VPN allows remote users to securely connect to the internal network over the internet by encrypting the data traffic.
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441fa70 👍 1 Answered AThe system described is a VPN concentrator. A VPN concentrator allows secure remote access over a public IP and can be configured with access control lists (ACLs) to manage and restrict access.
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Sgthud 👍 2 Answered AWhy wouldn't this be A
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TheGuy1212 👍 1A is the right answer
Reader comments & corrections
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