unbound ☆

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Description:
Validating, recursive, caching DNS resolver

Type: Formula | Latest Version: 1.24.2@0 | Tracked Since: Nov 10, 2025

Links: Homepage | formulae.brew.sh

Category: Networking

Tags: dns networking security dnssec resolver

Install: brew install unbound

About:
Unbound is a validating, recursive, and caching DNS resolver. It is designed to be fast and secure, fully implementing DNSSEC validation to protect against cache poisoning and spoofing attacks. The software is lightweight and can be deployed on networks, servers, or individual devices to improve privacy and DNS performance.

Key Features:

DNSSEC validation support
DNS-over-TLS and DNS-over-HTTPS support
Lightweight and memory-efficient design
Extensive access control and ACL features

Use Cases:

Securing DNS queries on a local network or device
Building a private, caching DNS infrastructure
Preventing DNS spoofing and cache poisoning attacks

Alternatives:

dnsmasq – Unbound is a pure recursive resolver focused on security and DNSSEC, while dnsmasq is primarily a DHCP server and DNS forwarder.
bind – Unbound is lighter and simpler, optimized for recursive lookups, whereas BIND is a full-featured authoritative and recursive server with a larger attack surface.

Version History

Detected	Version	Rev	Change	Commit
Nov 10, 2025 2:59pm		0	VERSION_BUMP	c1260c42
Oct 4, 2024 2:39pm		0	VERSION_BUMP	b1f9a52b