TinyWall - Lightweight and non-intrusive firewall
SonicWall - SonicWall security solutions protects your network, systems, users and data from cyber threats.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Rapid7 MetaSploit - Penetration testing solution for risk validation.
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.