En/2.2/Zentyal Unified Threat Manager

The UTM (Unified Threat Manager) is a more advanced concept than the firewall. The UTM not only defines a policy based on source or destination, ports or protocols, but provides the necessary tools to secure your network. These tools allow you to interconnect different subnets safely, define advanced browsing policies, detect attacks on your network from Internet or hosts in the internal network, amongst other options.

[1] https://store.zentyal.com/other/advanced-security.html