This testing was conducted as part one of a two-part series examining cloud network firewalls. The firewalls were tested against an array of exploits using Keysight’s CyPerf v5.0 software testing platform, offering an evidence-based look at how well these native solutions withstand real-world security threats. We chose Keysight’s CyPerf testing tool so that enterprises could easily replicate our results. This first phase provides end-users with insights into the effectiveness of CSP native firewall offerings across three CSPs, helping organizations understand each CSP’s security offerings and capabilities. These findings also set the stage for part two, which will feature a series of upcoming tests evaluating cloud network firewall solutions from select industry leading vendors. Together, these two phases will enable organizations to compare firewalls based on tested effectiveness, helping them make well-informed decisions when selecting the most appropriate firewall solution for their cloud environment.