Untangle is a free UTM firewall. What does it do ? Its a linux based firewall that has several packages / features. One feature that i use every day is it’s VPN package. This package contains the software for a vpn connection from any os.
The vpn module that comes with it is called openvpn, free and open sourced. I use this 24/7 when im out on the road to gain access to my network at home and other things ( nas storage boxes ).
Another feature that’s installed and running is all it’s Antivirus features & spyware features, this monitors traffice entering my home network. Untangle will stop / block all unwanted traffic and malware that is not suppose to be entering the network.
My unit is setup in “Router-Mode” with 4 subnets at home, along with rules for certain subnets not talking to other subnets.
When you log into the “untangle” interface via a web-browser you see :