Heimdal DNS Security Network
DNS-level filtering that blocks malicious domains and logs DNS activity for visibility.
"Filters and blocks malicious domain requests at the network level, helping organisations protect all connected devices from threats before they reach endpoints."
Filter and log DNS queries to block malicious or unwanted domains with Heimdal DNS Security Network
DNS queries are an early attack vector. Malicious domains, phishing and command‑and‑control traffic often rely on DNS resolution. Many estates have limited central DNS controls or sparse logging, which leaves gaps in prevention and investigation.
Heimdal DNS Security Network filters and records DNS queries using threat intelligence and configurable policies. It enforces block and allow rules at the DNS level and produces searchable logs for analysis. That gives clear, estate-wide DNS enforcement and visibility.
The product is relevant where remote working, multiple sites or regulatory needs increase exposure. It sits alongside endpoint and network controls to reduce the chance of successful callbacks and to aid follow-up analysis.
Where Heimdal DNS Security Network is used
MSPs apply DNS filtering to provide per-customer policies and reduce malware callbacks across hosted and client networks.
SMEs and organisations with remote staff use centralised policies to protect users off-site and at branch offices without increasing endpoint management overhead.
Regulated organisations use DNS logs for investigation and to support internal reporting when handling sensitive data.
Fits within these solutions
Suitable environments
Best suited to multi-site and distributed estates where a central DNS control point can apply consistent policies across offices and remote users.
Also appropriate for cloud or hybrid environments that mix public DNS with on-prem services. It complements existing endpoint and perimeter defences rather than replacing them.
Benefits
Block threats across the network
Prevents devices from accessing malicious domains at the network level.
Protect unmanaged and IoT devices
Extends protection to devices that cannot run endpoint security tools.
Reduce malware and phishing risk
Stops access to domains used in phishing and malware delivery.
Limit spread of threats
Blocks command-and-control communication to contain infections.
Strengthen network security layers
Adds DNS-layer protection alongside firewalls and endpoint controls.
Increase visibility of network activity
Provides insight into DNS requests and blocked connections across the network.
Reduce security incidents
Prevents successful attacks by blocking malicious connections early.
Capabilities
Network-level DNS filtering
Malicious domain blocking
Command-and-control blocking
Real-time threat intelligence
Policy-based domain control
Network-wide protection
Centralised management
Reporting and visibility
Applications
Protect the entire network from malicious domains
Used to block access to malicious domains for all connected devices.
Secure unmanaged and IoT devices
Provides protection for devices that cannot run endpoint agents.
Prevent access to phishing and malicious websites
Stops users and devices from reaching harmful domains.
Contain network-level threats
Blocks communication with attacker infrastructure to limit impact of compromised devices.
Add DNS-layer protection at network level
Introduces an additional layer of defence before traffic reaches endpoints.
Simplify DNS security management
Centralises control of domain access policies across the network.
How we help
Armstrong may support implementation, configuration and ongoing support of Heimdal DNS Security Network. Armstrong often helps with product selection and integration into DNS forwarding or proxy setups, and can assist with policy and logging configuration to meet operational needs. Typical customers include MSPs, SMEs with limited security staff, organisations with distributed or remote workforces, multi-site businesses, regulated organisations handling sensitive data, and estates with cloud or hybrid infrastructure. Armstrong focuses on software configuration and related professional support and does not operate customers' environments.
