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Parcours Manage and Secure DNS

Training : DNS Administrator

Last updated on : 6th October 2025

  • 2 days
  • Distanciel

Rate : €1,600 excl. tax per participant

For some years now, both public and private actors have been seeing certain Internet services become inaccessible on account of problems linked to their DNS hosting. These breakdowns have considerable consequences: clients unable to access their bank accounts, online stores inaccessible, public services closed, etc. The robustness of DNS services generally suggests that Internet services are functioning normally; so, without a suitable DNS administration, an organisation can become extremely vulnerable.

It is essential for any organisation to have skilled administration that allows it to maintain a comprehensive, high-quality DNS service, whether it is hosted in-house or entrusted to a hosting service provider.

Description and teaching objectives of the training programme

This training course will enable you to

  • Design a DNS architecture that provides quality resolution by implementing the best practices in the industry
  • Configure your DNS zone so as to prevent dysfunctions
  • Identify and resolve problems linked to DNS using benchmark tools and software
  • Assess the quality of your configuration using diagnostic examples of problematic configurations
  • Define operational standards (robustness, performance, etc.) to help you choose and evaluate your DNS host

Duration

2 days

Target audience

DNS Administrators, System and Network Administrators, CIOs, deputy CIOs

Requirements

participants must either perform administrative tasks in the area of DNS or have completed Afnic’s “Basics of the DNS and the Domain Name Industry” course.

Instructor

Stéphane Bortzmeyer, DNS Expert & R&D Engineer, Afnic

Venue

The training will be delivered online using our video-conference tool.
A connection link will be sent to you once your registration has been completed.

Assessment

Practical exercises will be carried out throughout the course to help assimilate the methods and concepts presented.

Cost

€1,600 excl. tax per participant
If you wish to register several persons from your organisation, please contact us for a quotation.

Booking details

Bookings are possible up to 5 working days prior to the session.

View training program

Day 1 – Understanding the functioning of the DNS in detail

Session 1: The DNS Administrator’s toolbox

  • API data feed
  • Dynamic DNS update
  • Reading in a DBMS
  • Chain resolvers
  • DNS Load Balancing Systems
  • Filtering resolvers / fake resolvers

Session 2: Designing an effective architecture

  • The DNS Administrator’s toolbox (continued):
    • DNSSEC
    • CDS/CDNSKey
    • Implementing catalogue zones
  • The various feed possibilities
  • The process of resolution in a complex architecture

Day 2 – Optimising the DNS architecture

Session 1: Management and resolution of incidents

  • Analysing the quality of the configuration using Zonemaster and DNSviz
  • Active measurement from several points in the network using RIPE Atlas probes
  • Quality control with Zonemaster

Session 2: Management and resolution of incidents (continued)

  • Query load simulation with DNSPerf
  • The attack test
  • Benchmark tools
  • Assessing robustness
  • Operational assessment of the DNS hoster

DIRECCTE declaration number: 11788446878

  • 2 days
  • Distanciel

Rate : €1,600 excl. tax per participant

PDF format

Need further information on tailoring a training course to your needs?

Contact us

Tailor-made training

Our experts can adapt to your needs and devise a custom training course. For group enrolment, please contact us for a custom quotation.

Specific arrangements

Afnic places great importance on inclusion of people with a disability. If you require any specific arrangements, please contact us before registering to discuss your proposal (programme, adapted materials, specific needs in terms of accessibility or organisation, etc.)

Certification

Afnic is QUALIOPI® certified as a training organisation.

View our Qualiopi certificat (PDF 141 Ko)
Contact us

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DNS Administrator

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