Webmin - Webmin is a web-based interface for system administration for Unix.
TinyWall - Lightweight and non-intrusive firewall
ClearOS - A very good alternative for Windows Server, for free
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
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.
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.