Sophos Firewall Administrator Practice Exam

Using VPN connections is the most effective way to ensure a secure connection for remote users accessing the network through Sophos Firewall. VPN, or Virtual Private Network, creates an encrypted tunnel over the internet, which safeguards the data being transmitted between the remote user and the network. This encryption is crucial for protecting sensitive information from potential eavesdropping or interception by malicious actors.

A VPN also authenticates users, ensuring that only authorized personnel can access the network resources. This added layer of security helps in verifying the identity of users before granting access, further enhancing the overall security posture of the organization.

The other options, while beneficial in certain contexts, do not provide the same level of security as VPNs. Limiting access by IP addresses can help control who can connect to the network, but it does not encrypt the data being transmitted or authenticate users in a robust manner. Implementing MAC address filtering can add a layer of security by allowing only certain devices to connect, but it is not foolproof, as MAC addresses can be spoofed. Disabling guest access can prevent unauthorized users from connecting, but it does not secure the connections that are made by authorized users. Therefore, relying on VPN connections provides a comprehensive and effective solution for ensuring secure access for remote users