Chainguard Container for pdns-recursor-fips

PowerDNS Recursor is a non authoritative/recursing DNS server.

Chainguard Containers are regularly-updated, secure-by-default container images.

Download this Container Image

For those with access, this container image is available on cgr.dev:

docker pull cgr.dev/ORGANIZATION/pdns-recursor-fips:latest

Be sure to replace the ORGANIZATION placeholder with the name used for your organization's private repository within the Chainguard Registry.

Compatibility Notes

The Chainguard pdns-recursor image is comparable to the pdns-recursor image on Docker Hub. Like most Chainguard images, this container image is minimal and does not include unnecessary components such as a shell or package manager, while maintaining full compatibility.

FIPS Support

The pdns-recursor-fips Chainguard Image ships with a validated redistribution of the OpenSSL's FIPS provider module. For more on FIPS support in Chainguard Images, consult the guide on FIPS-enabled Chainguard Images on Chainguard Academy.

Disable non-FIPS Algorithms

To disable non-FIPS algorithms in PowerDNS Recursor, pass the disabled_algorithms configuration option under dnssec:

dnssec:
  disabled_algorithms: [5, 7, 15, 16]

It doesn't support to use the human-readable names:

• 5: RSASHA1
• 7: RSASHA1-NSEC3-SHA1
• 15: ED25519
• 16: ED448

Note: In OpenSSL's FIPS provider module version 3.1.2, ED25519 and ED448 algorithms are not supported. Support for these algorithms will be introduced in module version 3.4.0.

Getting Started

Running with Docker

To run pdns-recursor using Docker, you can use the following command:

docker run \
    -p 53:53/tcp \
    -p 53:53/udp \
    -p 8082:8082 \
    --name "pdns-recursor-fips" \
    -v $(pwd)/recursor.yaml:/etc/powerdns/recursor.yaml:ro \
    cgr.dev/ORGANIZATION/pdns-recursor-fips:latest

Be sure to replace the ORGANIZATION placeholder with the name used for your organization's private repository within the Chainguard Registry.

Ensure the non-FIPS algorithms are disabled

$ docker exec pdns-recursor-fips rec_control list-dnssec-algos
RSASHA1(disabled) RSASHA1-NSEC3-SHA1(disabled) RSASHA256 RSASHA512 ECDSAP256SHA256 ECDSAP384SHA384 ED25519(disabled) ED448(disabled)

See the following below resources for further usage details.

Resources

• Getting Started

What are Chainguard Containers?

Chainguard Containers are minimal container images that are secure by default.

In many cases, the Chainguard Containers tagged as :latest contain only an open-source application and its runtime dependencies. These minimal container images typically do not contain a shell or package manager. Chainguard Containers are built with Wolfi, our Linux undistro designed to produce container images that meet the requirements of a more secure software supply chain.

The main features of Chainguard Containers include:

• Minimal design, without unnecessary software bloat
• Daily builds to ensure container images are up-to-date with available security patches
• High quality build-time SBOMs attesting to the provenance of all artifacts within the image
• Verifiable signatures provided by Sigstore
• Reproducible builds with Cosign and apko (read more about reproducibility)

For cases where you need container images with shells and package managers to build or debug, most Chainguard Containers come paired with a -dev variant.

Although the -dev container image variants have similar security features as their more minimal versions, they feature additional software that is typically not necessary in production environments. We recommend using multi-stage builds to leverage the -dev variants, copying application artifacts into a final minimal container that offers a reduced attack surface that won’t allow package installations or logins.

Learn More

To better understand how to work with Chainguard Containers, please visit Chainguard Academy and Chainguard Courses.

In addition to Containers, Chainguard offers VMs and Libraries. Contact Chainguard to access additional products.

Trademarks

This software listing is packaged by Chainguard. The trademarks set forth in this offering are owned by their respective companies, and use of them does not imply any affiliation, sponsorship, or endorsement by such companies.