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    Unbound DNS Resolver - Software Sushi

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    Deployed on AWS
    Free Trial
    This is a repackaged open source software product wherein additional charges apply for AMI packaging, first-boot configuration and setup documentation. Run Unbound 1.26.1 as a loopback validating recursive DNS resolver on Ubuntu 24.04 with a synthetic DNSSEC zone and refused unsigned zone check.

    Overview

    This is a repackaged open source software product wherein additional charges apply for independent AWS packaging, validation, maintenance and setup documentation. NLnet Labs publishes Unbound under BSD terms; Software Sushi supplies the AMI recipe, pinned official source tarball build, first-boot trust anchors and signed synthetic zone, loopback ACL defaults, and setup documentation without claiming upstream endorsement.

    Launch the approved version on t3.medium with at least 16 GiB encrypted root storage and at least 2 GiB RAM. Connect with AWS Systems Manager as ubuntu or restrict SSH to your administrative CIDR. First boot writes root trust anchors, secure.test keys and signed zone material; nothing sensitive is baked into the image. The recursive resolver listens on 127.0.0.1:53 and refuses other clients. Keep private DNSSEC keys out of recordings and tickets.

    The standard software fee is described in the AWS Marketplace offer terms. EC2, EBS and data-transfer charges are billed separately. See the offer terms for applicable billing promotions.

    After launch, wait for cloud-init to finish, then follow the bundled README for configuration, backup and day-2 operations. IAM is not required for the resolver itself. Opening the resolver beyond loopback is a customer change.

    Highlights

    • Pinned Unbound 1.26.1 built from the official NLnet Labs tarball with provenance receipts.
    • Loopback validating resolver with synthetic DNSSEC zone and refused unsigned zone check.
    • Bundled configuration, backup and day-2 operations documentation.

    Details

    Delivery method

    Delivery option
    64-bit (x86) Amazon Machine Image (AMI)

    Latest version

    Operating system
    Ubuntu 24.04

    Deployed on AWS
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    Pricing

    Free trial

    Try this product free for 5 days according to the free trial terms set by the vendor. Usage-based pricing is in effect for usage beyond the free trial terms. Your free trial gets automatically converted to a paid subscription when the trial ends, but may be canceled any time before that.

    Unbound DNS Resolver - Software Sushi

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    Pricing is based on actual usage, with charges varying according to how much you consume. Subscriptions have no end date and may be canceled any time.
    Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator  to estimate your infrastructure costs.

    Usage costs (1)

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    Dimension
    Cost/hour
    t3.medium
    Recommended
    $0.02

    AI Insights

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    Dimensions summary

    This listing uses a single usage-based pricing dimension tied to the t3.medium Amazon EC2 instance, billed per hour. You pay the software charge for each hour the instance runs, so your cost scales directly with runtime. There are no tiers or quantity commitments to choose between. The image launches in your own AWS account, meaning AWS infrastructure such as EC2 compute, storage, networking, and data transfer bills separately from this software charge. Any connected outside services you add also carry their own charges.

    Top-of-mind questions for buyers

    You pay for one t3.medium Amazon EC2 instance running the preconfigured image, billed per hour it runs. This instance type provides a general-purpose compute size suited to running the resolver software. The charge covers the software license on that instance, metered by actual runtime.
    The software charge meters hours the t3.medium instance actually runs. When you stop the instance, software charges stop accruing. Underlying AWS resources such as attached storage may still bill separately while the instance is stopped, since those are AWS infrastructure costs, not the software charge.
    AWS infrastructure such as EC2 compute, EBS storage, networking, and data transfer bills separately. Any outside services you connect after launch carry their own charges too. You add your own credentials and run the instance in your own AWS account, so you control and pay for that infrastructure directly.
    softwaresushi.com
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    Vendor refund policy

    We offer a full refund of software charges for the first 48 hours billing starts if the product does not perform as described. To request a refund, email info@softwaresushi.com  with your EC2 instance ID and a description of the issue. AWS infrastructure costs (EC2, EBS, data transfer) are not eligible for refund by us.

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    Vendor terms and conditions

    Upon subscribing to this product, you must acknowledge and agree to the terms and conditions outlined in the vendor's End User License Agreement (EULA) .

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    Usage information

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    Delivery details

    64-bit (x86) Amazon Machine Image (AMI)

    Amazon Machine Image (AMI)

    An AMI is a virtual image that provides the information required to launch an instance. Amazon EC2 (Elastic Compute Cloud) instances are virtual servers on which you can run your applications and workloads, offering varying combinations of CPU, memory, storage, and networking resources. You can launch as many instances from as many different AMIs as you need.

    Version release notes

    Unbound 1.26.1 on Ubuntu 24.04 LTS for t3.medium. Includes a loopback validating recursive resolver on 127.0.0.1:53, synthetic DNSSEC authority on 127.0.0.1:5353, first-boot trust anchors and signed zone, and a refused unsigned zone check. Connect with Session Manager as ubuntu and run bash /opt/sushi/docs/demo.sh after first boot.

    Additional details

    Usage instructions

    Launch t3.medium with at least 16 GiB encrypted gp3 root storage. Use AWS Systems Manager Session Manager as ubuntu, or restrict SSH to your administrative CIDR. After first boot, run bash /opt/sushi/docs/demo.sh. Query dig @127.0.0.1 for resolver checks; Unbound stays on loopback by default.

    Support

    Vendor support

    Software Sushi provides AMI packaging and setup guidance. Contact info@softwaresushi.com  for installation questions. Support coverage requires a separate agreement. This offer does not include NLnet Labs or Unbound project support.

    AWS infrastructure support

    AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.

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