ScoutDNS is a powerful cloud managed RPZ (response policy zone) option for adding DNS Layer security to the network. Although an effective content filter in the age of HTTPS sites, RPZs go much further in protecting your network through advanced DNS security controls. ScoutDNS can prevent DNS Rebinding attacks, block Covert Channel attempts, and limit the scope of available domains for Malware C&C.
OpenDNS - OpenDNS provides faster and safer Internet access for your home or Business.
DNSFilter - DNSFilter offers DNS-Based Content Filtering & Threat Protection.
SafeDNS - A powerful DNS-layer defense against internet threats. Protect your networks and employees with our cloud-based security solutions, and join more than 4000 businesses that trust us
DNSCrypt Protocol - A protocol to improve DNS security
1.1.1.1 - The free app that makes your Internet safer.
Synology DS216+II - Synology DS216+II is a great data integration hardware which is provided by Synology Technologies.