Port 20720

Symantec i3 Web GUI Server runs on TCP port 20720, delivering a web-based interface used alongside Symantec's i3 Suite. The i3 platform is designed for application performance management, allowing users to collect, analyze, and visualize performance data across distributed systems. The web GUI facilitates these operations by presenting monitoring dashboards, system health indicators, and configuration tools via a browser.

Communication through this port enables HTTP or potentially HTTPS (if configured) traffic, granting remote access to the management console. This interface serves as the main point of interaction for IT administrators overseeing application environments, enabling fine-tuned troubleshooting and performance optimization.

The service typically expects only authorized users to connect, and may be integrated within corporate networks or data centers. Due to its management-critical nature, it is often restricted to internal access via network segmentation and firewall controls.