Dear Beloved Zenarmor Community,
Unbound DNS is a validating, recursive, and caching DNS resolver designed for high performance and security. Unbound DNS is open-source software, under a BSD license, created by NLnet Labs, extensively used in various platforms to resolve domain names into IP addresses. System administrators, Internet service providers, and users concerned about privacy often use Unbound. It is compatible with OPNsense, pfSense, FreeBSD, Linux, macOS, and other Unix-like operating systems.
In this tutorial (https://www.zenarmor.com/docs/network-security-tutorials/how-to-setup-unbound-dns-on-opnsense), we explain Unbound DNS's main features and how to configure it on your OPNsense firewall.
Best Regards,
Zenarmor Team