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What you need to know about DNS

DNS (Domain Name System) is an essential system of Internet infrastructure that translates human-readable domain names (like www.example.com) into computer-understandable IP addresses (like 192.0.2.1). This conversion allows users to easily access websites and online services without having to memorize complex IP addresses. DNS functions as a decentralized global directory, organized in a hierarchy of servers. When a user enters a domain name in a browser, a DNS query is sent to look up the associated IP address. DNS servers resolve these queries by interrogating different levels, from root servers to authoritative name servers. DNS is also used for other network services, such as emails, through MX records, or to secure connections via DNSSEC records. It is a crucial component for Internet browsing, ensuring resource accessibility while maintaining high performance and reliable domain name management.

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Contractor

Contractor jobData Platform Engineer GCP

Deodis
Published on
BGP (Border Gateway Protocol)
Google Cloud Platform (GCP)

4 months
400-550 €
Charenton-le-Pont, Ile-de-France
Pour le compte d'un acteur bancaire, nous recherchons un Data Platform Engineer GCP spécialisé réseau et sécurité. Il interviendra sur une plateforme Data Google Cloud hybride et multi-régions, connectée à un datacenter on-premise. Objectifs de la mission : Basculer les APIs et microservices de la plateforme Data vers un réseau privé, sans exposition Internet publique Finaliser la recette de l'interconnexion hybride GCP–Datacenter et lever les blocages de routage et de pare-feu Migrer les flux Kafka temps réel sur le lien Cloud Interconnect dédié Industrialiser le socle réseau et sécurité en Terraform via GitLab CI Mettre en place l'authentification centralisée (PingFederate, OIDC/SAML) et aligner les APIs sur les normes de sécurité bancaires Principales tâches : Raccorder les VPC Spokes au hub NCC et valider le routage BGP Déployer des Internal Load Balancers L7 et des Serverless NEGs vers Cloud Run Configurer le DNS Peering et les zones Cloud DNS privées Développer des modules Terraform réutilisables sur 4 environnements (Dev, Staging, Préprod, Prod) Mettre en place les politiques Zero-Trust (Cloud Armor, IAP) Provisionner Cloud SQL en IP privée et gérer le chiffrement KMS/CMEK Livrables attendus : DAT, matrice de flux réseau, cahier de recette et PV de connectivité, modules Terraform documentés, runbooks de dépannage, transfert de compétences aux équipes internes.
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Permanent

Job VacancyIT Support Engineer

Nexus Jobs Limited
Published on

£45k-55k
London, England, United Kingdom
IT Support Engineer Our Client is an established bank based in Central London. They are looking to recruit an IT Support Analyst with at least 5 plus years hands-on expertise of working within IT Support and Infrastructure. The following are list of skills required for the position: · Microsoft Windows (all versions) experience to a high level (troubleshoot and effectively resolve issues by research/using knowledge bases in a confident way). · Active Directory to a high level - security groups, administration/deployment, LDAP, ADSI. · Citrix XenApps – Administration, Maintenance and Support of existing Citrix XenApps server farm · Windows Server Environment 2012/2016 - design, deployment, maintenance and support. · VM-Ware virtualisation environments. · Backups (various and ability to use different applications). · Networking - design/troubleshoot/installation (VLAN, routing, switching, TCP/IP and OSI) · Router maintenance - wireless configuration, installation and setups. · PowerShell to a competent level (backup/azure/EMC). · VPN Administration and Deployment. · DNS – administration of DNS internal and external. The salary for this position with be circa £45K - £55K. This is a hybrid position and you will be required to be in the office at least 3 days a week. The position will be a 12 month full time contract – FTC initially. Do send your CV to us in Word format along with your salary and availability.
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Permanent

Job VacancyIT Support Engineer

Nexus Jobs Limited
Published on

£40k-50k
London, England, United Kingdom
IT Support Engineer Our Client is an established bank based in Central London. They are looking to recruit an IT Support Analyst with at least 5 plus years of 1 and 2 level hands-on expertise of working within IT Support and Infrastructure from a banking environment. The following are list of skills required for the position: · Microsoft Windows (all versions) experience to a high level (troubleshoot and effectively resolve issues by research/using knowledge bases in a confident way). · Active Directory to a high level - security groups, administration/deployment, LDAP, ADSI. · Citrix XenApps – Administration, Maintenance and Support of existing Citrix XenApps server farm · Windows Server Environment 2012/2016 - design, deployment, maintenance and support. · VM-Ware virtualisation environments. · Backups (various and ability to use different applications). · Networking - design/troubleshoot/installation (VLAN, routing, switching, TCP/IP and OSI) · Router maintenance - wireless configuration, installation and setups. · PowerShell to a competent level (backup/azure/EMC). · VPN Administration and Deployment. · DNS – administration of DNS internal and external. Experience of supporting Market Data and Bloomberg would be a great plus. The salary for this position with be circa £40K - £50K. This is a hybrid position and you will be required to be in the office at least 3 days a week. The position will be a 12 month full time contract – FTC initially. Do send your CV to us in Word format along with your salary and availability.
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Permanent

Job VacancyRed hat Openshift with Devops

█ █ █ ██ █ █
Published on
CI/CD
DevOps
Docker

United Kingdom

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Permanent

Job VacancyDevOps Senior Operations Engineer

Nexus Jobs Limited
Published on

£60k-80k
Bristol, England, United Kingdom
DevOps Senior Operations Engineer Our Client is looking to recruit a Senior DevOps Engineer with at least 5 to 7 years expertise. They are a young talented team building the next generation video advertising platform. The key purpose of this role is focused on development in the capacity of improvements to the systems and operational environment by scripting, automation or building of tools. There are several key areas that require constant development: • Automation – Enhancements to the automation build process. Enhancements are continuously added to the base repository as well as additions of new technologies. • Scripting and Tools – There are many processes, tasks that can be made easier using scripts or custom designed tools in a managed services environment. We are looking for someone with knowledge of networking and storage, virtualization and operating systems, as well as good knowledge of the Architecture side of the role. Ideal skills and experience - what are you bringing to the party? • Experience working in operations - making sure the wheels are greased and the ship is humming along • Automation, Packaging, Deployments (Custom Hypervisor, Puppet, Git, scripting, CI services) • Source Code version control systems: Git & SVN • Monitoring: NewRelic, PagerDuty, etc • Programming Languages: Bash, PHP, GoLang • Virtualisation: We have a custom hypervisor (ZPF) but things like VMWare ESXi/KVM/oVirt/RHEV • Classics: Apache, MySQL, Redis, Varnish • Logstash & Elasticsearch • Networking (switching, routing, firewalls, IDS/IPS, VPN, load balancing, DNS, Cisco, F5, Akamai) • Multi cloud setup - AWS, Digital Ocean, Rackspace, Linode etc • DNS, NTP, SMTP, Jenkins • A solid background in Linux System Administration Functions and responsibilities This is a dynamic and varied role, which includes things like: • Build, deployment and maintenance of new and existing environments • Designing and maintaining highly available architectures • Security (patch management, vulnerability scanning & monitoring) • Uptime – design and maintain the systems and networking for uptime, resilience, architecting for failure. • Evaluation of new, cutting-edge technologies to help improve business processes and streamline • Develop highly-available, scalable, robust systems and take ownership of problems as they occur • Undertake ad-hoc out of business hours work for occasional technical support The salary for this role will be in the range £60K - £80K. Please send your CV to us in Word format.
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Contractor

Contractor jobArchitecte solutions Montpellier Conteunerisation , micro-services, kubernetes, Virtualisation ...

WorldWide People
Published on
Architecture

6 months
400-500 €
Montpellier, Occitania
Architecte solutions Montpellier - Conteunerisation , micro-services, kubernetes, Virtualisation (EsX/VM) et réseaux (flux, transferts, DNS, firewall,proxy…) Définir et animer l'architecture technique des solutions, produire les livrables d'architecture techniques, compléter et superviser l'évolution de ces Architectures Technique au cours de leur mise en œuvre Accompagnement des équipiers(architecte applicatif, squad) et du Cluster (chef de projet, ingénieur de production, intégrateur, etc) dans l'implémentation et la vie de la solution technique définie, dans une logique Devops et agile Dont contribution aux phases de tests et benchs Dont le traitement des obsolescences techniques Suivi des mises en œuvre/construction de produits techniques, en liaison avec les socles technologiques fournisseurs (animation et/ou suivi) Compétences techniques : Architecture technique de solutions hybrides (native, monde open, mainframe) Dont Conteunerisation , micro-services, kubernetes Dont Virtualisation (EsX/VM) et réseaux (flux, transferts, DNS, firewall,proxy…) Base de données relationnelles et NoSQL (MongoDB, Elastic, etc..), gestion de cache APIsation , WSO2, Connaissances en développement sur des nouvelles technologies Environnement de travail Windows
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Permanent

Job VacancyDevOps Engineer

█ █ █ ██ █ █
Published on
CI/CD
DevOps
Github

London, England, United Kingdom

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Contract roles and jobs for DNS

System administrator

The Systems Administrator manages and configures DNS servers to ensure correct domain name resolution and service availability.

Systems & Networks Engineer

The Systems & Network Engineer administers and optimizes DNS services in a complex network environment, managing DNS zones, security, and redundancy.

Systems and Networks Manager

The Systems and Network Manager supervises the management of the company’s DNS infrastructure, implementing security and performance strategies for domain name services.

Network Technician

The Network Technician installs and maintains DNS configurations in company networks, ensuring connectivity and rapid domain name resolution.

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