01
Authoritative and recursive DNS
BIND9, PowerDNS and Unbound: zones, DNSSEC, views, RPZ, geo-aware answers and cache tuning.
Service
DNS Server and Linux Services Administration
Deployment, optimization and maintenance of DNS infrastructure, centralized monitoring with SNMP, Bash/Python automation and hosting of critical applications on Linux.
We operate servers that cannot go down: recursive resolvers, authoritative servers, distributed caches and the internal services the network depends on.
The conversation here is concrete: resolution latency, cache hit ratio, zone propagation and what exactly happens if the primary fails.
What's included
What this service includes
02
High availability
Primary/secondary replicas, AXFR/IXFR transfers, BGP anycast and zone consistency verification.
03
Centralized monitoring
OpenNMS and SNMP, Prometheus exporters, alert thresholds and availability and latency dashboards.
04
Operational automation
Idempotent Bash, systemd timers and Ansible for reproducible deployments with no manual steps.
05
Critical applications on Linux
Hardened Linux, containers, PHP-FPM, Nginx, automated TLS and verified backups.
06
Continuity and recovery
Restoration drills, recovery runbooks and documentation of dependencies between services.
Common questions
Frequently asked questions
Can you migrate DNS zones without downtime?
Yes. TTLs are lowered progressively, the new servers are published in parallel and resolution is validated before the old server is retired.
Do you support Windows Server DNS?
It is integrated into the architecture, although operations focus on BIND, PowerDNS and Unbound for control and observability.
What level of monitoring is included?
From basic availability checks to resolution-latency dashboards and threshold alerts. The scope is defined by criticality.
Related services
Usually delivered together
Cybersecurity, Hardening and Filtering
Protection against DDoS attacks, DNSSEC, vulnerability mitigation, traffic isolation, advanced firewalls and infrastructure audits.
- Verified external exposure inventory
- Findings with severity and evidence
- Firewall policies documented and versioned
Specialized and Hybrid Deployments
Microwave links, satellite connectivity integrations with Starlink, maritime networks and custom captive portals.
- Documented RF link budget
- Media failover tested on site
- Captive portal with the client’s branding
Shall we apply this to your network?
Send us the symptom, the topology and what changed before the failure. We reply with a first technical read.