Cybersecurity DNS Filtering | Defense-in-Depth DNS Layer & SOC Integration

DNS: The Security Layer You Cannot Afford to Miss

Over 91% of unsafe content uses DNS to communicate with restricted infrastructure. Despite this, most security architectures treat DNS as a utility rather than a security control point. This gap gives attackers a reliable, often unmonitored channel to establish persistence, exfiltrate data, and coordinate attacks.

DNS filtering closes this critical gap in your defense-in-depth strategy. By analyzing every DNS query against our database of 90 million categorized domains and real-time content classification, we block malicious connections at the earliest possible stage - before any TCP connection is established.

For security teams, DNS logs are a goldmine of content classification. Every blocked query represents an attack that was stopped. Every unusual pattern reveals potential compromise. DNS filtering transforms this overlooked data source into an active defense and content risk hunting platform.

DNS content classification

Why DNS belongs at the center of your security operations

91% Of unsafe content uses DNS for C2

90M+ Domains in content classification DB

<1ms Query analysis latency

Real-time SIEM log streaming

Security Stack Integration

DNS filtering enhances every layer of your existing security architecture

SOC Dashboard Integration

Real-time DNS content risk data feeds directly into your SOC dashboards. Analysts see blocked domains, content risk categories, and affected endpoints alongside alerts from your other security tools, providing complete attack context.

SIEM Log Feeds

Stream structured DNS query logs to Splunk, Elastic, QRadar, Sentinel, or any SIEM platform via syslog, CEF, or JSON formats. Correlate DNS activity with firewall logs, endpoint telemetry, and authentication events for complete visibility.

content risk Hunting via DNS

DNS query logs reveal attacker infrastructure that other tools miss. Hunt for DGA patterns, fast-flux networks, newly registered domains, and DNS tunneling across your entire environment using our searchable query history.

Incident Response Blocking

During active incidents, push classification domains to the DNS filter instantly via API. Cut off attacker restricted channels, block exfiltration domains, and sinkhole unsafe content communication in seconds rather than hours.

SOAR Playbook Actions

Integrate DNS filtering actions into automated SOAR playbooks. Automatically block domains when content classification platforms identify new classification data, when sandboxes detect C2 communications, or when EDR finds suspicious DNS activity.

Security Vendor Ecosystem

Complement your existing firewall, EDR, email gateway, and CASB investments. DNS filtering fills the gap between endpoint and network security, catching content risks that bypass other layers through encrypted channels or novel attack vectors.

Security-Grade DNS Capabilities

Built by security professionals for security professionals

DGA Detection Engine

Machine learning-based detection of domain generation algorithm patterns, identifying restricted network C2 domains in real-time even before they appear on content classification feeds.

DNS Anomaly Detection

Behavioral analysis identifies unusual DNS patterns per endpoint: sudden query spikes, new domain distributions, or time-of-day anomalies that indicate compromise.

DNS Tunneling Detection

Multi-method detection combining entropy analysis, query length monitoring, and timing patterns to identify and block DNS tunneling used for data leakage and covert communications.

REST API for Automation

Full-featured API supporting bulk domain operations, policy management, log retrieval, and classification ingestion. Build custom integrations with your security orchestration workflows.

Retroactive Query Analysis

When new classification data are published, retroactively search DNS query history to identify endpoints that previously resolved now-known malicious domains, revealing pre-existing compromise.

content classification Enrichment

Enrich DNS events with WHOIS data, domain age, hosting provider, SSL certificate details, and historical resolution data to accelerate analyst triage and investigation workflows.

Cybersecurity DNS Filtering Scenarios

How security teams leverage DNS filtering in daily operations

Catching C2 That Bypassed EDR

1

A fileless unsafe content variant evades endpoint detection by running entirely in memory. While EDR sees no malicious files, DNS filtering detects the unsafe content's attempt to resolve a freshly generated DGA domain for C2 communication, alerting the SOC and blocking the connection before data leakage begins.

Proactive content risk Hunt via DNS Logs

2

A content risk hunter analyzes DNS query logs and discovers three endpoints making periodic requests to randomized subdomains of a single domain - a classic beacon pattern. Investigation reveals a previously undetected RAT installed via a compromised software update, leading to full incident remediation.

Automated IR Domain Blocking

3

During an active restricted content incident, the IR team identifies 47 domains used by the bad actor. Through the API, all domains are pushed to the DNS filter in under 10 seconds, immediately cutting off the attacker's infrastructure across every managed endpoint in the organization.

Retroactive classification Matching

4

A new content classification report identifies a supply chain compromise that has been active for 3 months. Retroactive analysis of DNS query history reveals two internal systems resolved the malicious update domain 67 days ago, allowing targeted forensics on the affected machines.

DNS Filtering as Your Defense-in-Depth DNS Layer