This reports whether Anti-Virus scanning of HTTP traffic specifically is currently enabled and active on this gateway. Since HTTP is typically the highest-volume and highest-risk vector for drive-by malware downloads, this is the single most important per-protocol AV state to verify is on: a gateway with AV globally enabled but this state disabled would leave web downloads completely unscanned while appearing protected overall. For example, this reading Inactive after a performance-tuning change accidentally disabled HTTP inspection specifically, leaving web downloads unscanned while FTP and SMTP scanning kept running.