Law Enforcement DNS Filtering | CJIS-Compliant Network Security

Why Law Enforcement Needs DNS-Layer Protection

Police departments and sheriff offices operate some of the most sensitive networks in existence. Officers access NCIC databases, criminal history records, and warrant systems daily. A single compromised endpoint can expose millions of criminal records and endanger ongoing investigations.

Traditional perimeter firewalls cannot protect officers in the field using mobile data terminals, body cameras uploading footage over cellular connections, or detectives working remotely. DNS filtering provides a foundational security layer that follows every device regardless of location.

Our DNS filtering solution delivers the access controls, audit logging, and encryption requirements mandated by the CJIS Security Policy while maintaining the performance law enforcement operations demand.

Law Enforcement web landscape

The scale of cybersecurity challenges facing police and sheriff departments

860+ Police agencies hit by restricted content since 2020

100% CJIS audit compliance supported

58 Content categories for policy enforcement

<1ms DNS query response latency

CJIS Security Policy Compliance

DNS filtering addresses critical CJIS requirements across multiple policy areas

Access Control (5.5)

DNS filtering enforces network-level access controls by blocking connections to unauthorized domains. Only approved law enforcement databases, evidence management systems, and communication platforms resolve successfully.

Audit & Accountability (5.4)

Every DNS query is logged with timestamp, source device, requested domain, and action taken. These immutable audit records satisfy CJIS audit trail requirements and support internal affairs investigations when needed.

Encryption (5.10.1.2)

DNS queries are encrypted using DNS-over-HTTPS and DNS-over-TLS, meeting CJIS encryption requirements for data in transit. All communications between agency devices and our filtering infrastructure use FIPS 140-2 validated cryptography.

Personnel Security (5.12)

Prevent officers and staff from accessing compromised websites that could introduce unsafe content to CJIS-connected systems. DNS filtering acts as a technical control complementing personnel security awareness training.

System Protection (5.10)

DNS filtering provides an additional layer of system and communications protection by blocking restricted domains, unsafe content distribution sites, and restricted content infrastructure before connections are established.

Mobile Device Policy (5.13)

Lightweight DNS filtering agents on officer laptops and mobile data terminals enforce consistent security policies whether connected to the station network, in-vehicle WiFi, or cellular data connections.

Purpose-Built for Law Enforcement Operations

DNS filtering capabilities designed for the unique requirements of police and sheriff departments

Mobile Data Terminal Protection

Secure in-vehicle computers accessing NCIC, state criminal databases, and warrant systems through always-on DNS filtering over any connection.

Body Camera Network Security

Protect body camera upload infrastructure from being used as a vector for network compromise while ensuring footage reaches evidence management systems securely.

Dispatch System Isolation

Apply strict DNS allowlisting to CAD and dispatch systems, ensuring 911 operations can only communicate with authorized emergency services infrastructure.

Criminal Database Access Control

Restrict DNS resolution to approved state and federal criminal justice databases, preventing unauthorized data leakage from NCIC-connected systems.

Role-Based Filtering Policies

Apply different DNS policies for patrol officers, detectives, administrative staff, and IT personnel based on Active Directory groups and job function.

Incident Response Integration

Instantly block domains associated with an active content risk by pushing classification data directly to the DNS filter, cutting off attacker infrastructure in seconds.

Law Enforcement DNS Filtering Use Cases

How agencies deploy DNS filtering to protect critical police operations

restricted content Defense for Dispatch

1

A dispatcher receives a fraudulent email disguised as a court notice. The embedded link points to a restricted content distribution domain. DNS filtering blocks the domain resolution instantly, preventing a potential 911 system shutdown that could cost lives.

Officer Device Roaming Security

2

Detectives working cases outside the station connect to coffee shop WiFi or hotel networks. The DNS filtering agent ensures their CJIS-connected laptops maintain the same security posture as when connected to the department network.

Evidence System Data Protection

3

Digital evidence management systems store body camera footage, forensic images, and case documents. DNS filtering prevents compromised workstations from exfiltrating evidence data to external servers, preserving chain of custody integrity.

Multi-Agency Task Force Networks

4

Joint task forces bring devices from multiple agencies onto shared networks. DNS filtering ensures every connected device meets the highest common security standard, regardless of which agency owns the hardware.

DNS Filtering for Law Enforcement Agencies