What does hillstone networks do? Hillstone Networks Corp. develops network security software. The Company develops firewall, virus scanning engine, intrusion prevention system, network behavior control, and other security software. Hillstone Networks serves customers worldwide. NO. OF EMPLOYEESIs hillstone a gartner recognized firewall? Hillstone has been recognized by Gartner seven years in a row in its Magic Quadrant for Network Firewalls, and included as representative vendor in Market Guide for Network Detection and Response, Market Guide for Intrusion Detection and Prevention Systems, and Gartner Market Guide for Cloud Workload Protection Platforms.