CompTIA CASP+ Practice Test

Which of the following is most likely required to comply with a new security policy that restricts remote access to authorized personnel only?

1. VPN concentrator

2. Firewall

3. Router

4. Proxy server

The correct answer is: Firewall

A firewall is typically crucial for enforcing security policies that restrict remote access to authorized personnel. Firewalls can monitor and control incoming and outgoing network traffic based on predetermined security rules. In this case, with a new security policy in place, a firewall can effectively serve as a barrier that only allows remote access from specified sources, ensuring that unauthorized personnel cannot access the network. While a VPN concentrator, a router, and a proxy server all play roles in network security and access management, they serve different primary functions. A VPN concentrator is primarily used to create and manage VPN connections, thereby providing secure remote access. However, if the goal is to restrict access based on a policy, the firewall would be the more appropriate tool for enforcing those restrictions at a broader level. A router's main function is to route traffic between networks, and while it can incorporate basic firewall capabilities, it is not primarily designed for that purpose. Similarly, a proxy server operates by mediating requests to resource servers but isn't typically responsible for access control rules in the same way that a firewall is. Thus, a firewall is the most appropriate answer for enforcing a security policy that restricts remote access.