Network Visibility through DPI and Encryption Proxies

This white paper discusses the challenges and solutions related to network visibility in the context of encryption technologies, particularly focusing on Deep Packet Inspection (DPI) and encryption proxies. It outlines the role of encryption in modern communication, emphasizing the necessity of encryption for protecting applications and user data. The paper identifies two current trends in encryption: the increasing amount of data being encrypted, including metadata, and the potential impact of quantum computing on existing encryption methodologies. It explains how the adoption of TLS 1.3 has affected the availability of metadata for application control, necessitating the use of alternative technologies for network visibility. The paper also addresses the dual nature of encryption, which enhances security while simultaneously posing challenges for malware detection. It concludes by recommending the implementation of advanced security solutions, including next-generation firewalls with behavioral DPI, to maintain visibility and security in encrypted communications.