Sophos Firewall Administrator Practice Exam 2026 – The All-in-One Guide to Master Your Certification!

L2TP, or Layer 2 Tunneling Protocol, is commonly used for VPN connections because it provides a method to encapsulate data packets while creating a secure tunnel over the internet. This tunneling allows for the encryption of data, which is essential for maintaining privacy and security, especially for remote access to a network. L2TP is often paired with IPsec (Internet Protocol Security) to provide the necessary encryption and authentication features to secure the data traveling through the VPN tunnel, enhancing its effectiveness in protecting sensitive information.

In contrast, protocols like FTP (File Transfer Protocol), SMTP (Simple Mail Transfer Protocol), and HTTP (Hypertext Transfer Protocol) are not designed for secure remote access through VPNs. FTP is used for transferring files, SMTP for sending emails, and HTTP for web traffic. These protocols lack the inherent security features required for establishing encrypted VPN connections, making them unsuitable for that purpose.