Unbound DNS Resolver on Ubuntu 24.04 LTS

Name: Unbound DNS Resolver on Ubuntu 24.04 LTS
Brand: cloudimg

Azure Networking

Unbound, a validating, recursive, caching DNS resolver that answers safely the moment it boots.

Base

Hardened build

minimal ports, security patches applied at build time

Access

Unique credentials

generated on first boot, readable only by root

Verified

Boots working

services pass a health gate before release

Support

24/7, 365 days

by email and live chat, 24 hour response SLA

Overview

Unbound is a fast, lean DNS resolver from NLnet Labs that performs recursive resolution and DNSSEC validation for the networks it serves. It cryptographically validates every answer, caches aggressively for low latency, and is driven entirely by a single plain text configuration file, with no database and no web console to manage. It is a popular choice for private resolvers inside cloud networks, on premises sites and labs.

Why the cloudimg image

cloudimg ships Unbound hardened, fully patched and configured secure by default: DNSSEC validation is on, and recursion is offered only to the local host and your private ranges rather than the public internet, so it can never be abused as an open resolver. The control channel is keyed by a fresh per instance credential generated at first boot, never baked into the image. Paired with a step by step deploy guide and backed by 24/7 support.

Common uses

A private recursive resolver for a cloud network
DNSSEC validating resolution for trusted subnets
A fast caching resolver for labs and edge sites

Overview

Why the cloudimg image

Common uses

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