TinyWall - Lightweight and non-intrusive firewall
Webmin - Webmin is a web-based interface for system administration for Unix.
SonicWall - SonicWall security solutions protects your network, systems, users and data from cyber threats.
ClearOS - A very good alternative for Windows Server, for free
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
cPanel - With its first-class support and rich feature set, cPanel & WHM has been the web hosting industry's most reliable, intuitive control panel since 1997.