Transportation Web Filtering | Fleet Security & DOT Compliance

Why Transportation Networks Need Web Filtering

The transportation industry is undergoing a digital transformation. Fleet management platforms, electronic logging devices (ELDs), GPS tracking systems, warehouse management software, and connected vehicle telematics all depend on reliable internet connectivity. This connected ecosystem creates an expanding attack surface that adversaries actively exploit to disrupt supply chains, steal freight intelligence, and deploy ransomware.

A 2025 industry report found that transportation and logistics companies experienced a 42% increase in cyberattacks compared to the previous year. Ransomware attacks on carriers have delayed shipments worth millions of dollars, and compromised freight broker systems have enabled cargo theft rings to redirect high-value loads. The DOT and TSA have responded with new cybersecurity directives mandating baseline controls including content filtering.

Web filtering at the DNS layer is the most efficient way to protect distributed transportation networks. Every truck cab, warehouse, distribution center, and corporate office benefits from the same policy enforcement, regardless of network topology or device type. Our API classifies 100 million domains across 59 categories, blocking content risks before they reach a single endpoint.

Fleet Security & Regulatory Compliance

Purpose-built filtering capabilities for the unique needs of transportation operators

ELD & Telematics Protection

Electronic logging devices are mandated by FMCSA and connected to cellular networks 24/7. Web filtering prevents compromised ELDs from communicating with command-and-control infrastructure, protecting both compliance data integrity and the broader fleet management network from lateral movement attacks.

DOT & TSA Compliance

TSA Security Directive 1580-21 requires surface transportation operators to implement cybersecurity measures including network segmentation and access controls. Web filtering provides documented, auditable access control at the DNS layer, directly satisfying directive requirements for preventing unauthorized outbound connectivity.

Warehouse Network Security

Distribution centers run warehouse management systems (WMS), automated picking equipment, and IoT sensors on converged networks. Filtering prevents warehouse workers on shared WiFi from accessing unsafe content distribution sites that could compromise automation systems sharing the same network infrastructure.

Route-Based Policy Enforcement

Different network segments require different filtering policies. Driver cab WiFi needs strict content controls for distraction prevention and liability mitigation, while dispatch systems need access to mapping and weather services. Our API supports granular per-source policies applied in real time based on network segment identifiers.

Multi-Modal Network Coverage

Modern logistics companies operate across trucking, rail, maritime, and air freight. Each mode has unique network architectures and compliance requirements, but all share the same fundamental need: preventing staff and connected systems from reaching malicious or inappropriate destinations on the internet.

Our API provides a single policy framework that spans all transportation modes. Define categories to block, set bandwidth-priority rules for operational traffic, and deploy across every facility and mobile asset. Policy changes propagate in real time, and comprehensive logging creates a unified audit trail across your entire multi-modal operation.

Transportation content risk Landscape

Domain categories most relevant to transportation and logistics security operations

Ransomware Infrastructure

Payload servers, leak sites

Freight Broker restricted content

Fake load board sites

GPS Spoofing Services

Location falsification tools

Cargo Theft Networks

Fraud & diversion sites

Distracted Driving Content

Streaming, gaming, gambling

data leakage

Unauthorized cloud uploads

unsafe content Distribution

Drive-by downloads

Adult & Explicit Content

Liability & policy violations

C2 Infrastructure

Botnet command servers

VPN & Proxy Bypass

Filter evasion services

Shadow IT

Unapproved SaaS tools

Cryptomining Scripts

Resource hijacking

Real-Time Supply Chain Intelligence

Transportation companies are prime targets for supply-chain attacks that compromise vendor portals, load boards, and EDI platforms. Our classification engine continuously monitors domains associated with freight ecosystems, flagging newly registered lookalike domains that impersonate major load boards, fuel card portals, and broker platforms within minutes of registration.

When a restricted content campaign targeting freight brokers launches using a domain like "dat-loadboard-verify.com," our machine-learning classifier identifies it as a restricted content domain before it reaches a single inbox in your organization. This proactive protection is particularly critical in transportation, where a single compromised credential can redirect loads worth hundreds of thousands of dollars.

Detailed DNS query logs give security teams full visibility into every domain accessed from every network segment, enabling rapid incident response and forensic investigation when suspicious activity is detected.

Transportation Web Filtering Use Cases

How carriers, brokers, and logistics providers deploy web filtering across their operations

Over-the-Road Fleet Management

Trucking fleets equip cabs with WiFi hotspots for ELD connectivity, navigation, and driver communication. Web filtering on cab networks blocks distracting content that contributes to distracted driving liability, prevents unsafe content from compromising ELD data, and enforces company acceptable-use policies across thousands of mobile assets simultaneously.

Port & Maritime Terminal Operations

Container terminals operate terminal operating systems (TOS), automated stacking cranes, and RFID tracking on converged networks. The 2017 NotPetya attack on Maersk demonstrated the catastrophic impact of unsafe content in port environments. DNS-based web filtering prevents compromised workstations from reaching unsafe content distribution and C2 infrastructure without impacting real-time crane operations.

Last-Mile Delivery Networks

Last-mile delivery companies rely on mobile devices for route optimization, proof of delivery, and real-time tracking. These devices connect through cellular networks to cloud backends. Filtering at the DNS resolver level protects delivery devices from restricted content and unsafe content regardless of the cellular carrier or geographic location, ensuring consistent security across every delivery route.

Freight Brokerage Operations

Freight brokers handle sensitive shipper data, carrier payment information, and load details that are high-value targets for cargo theft rings. Web filtering blocks access to known fraud domains, prevents credential restricted content on fake load board sites, and restricts outbound data transfers to unauthorized cloud services where stolen freight data is exfiltrated.

100M

Domains Classified

42%

YoY Attack Increase

Content Categories

<5ms

Average Lookup Latency

Distributed Deployment for Moving Assets

Transportation networks are inherently distributed. Vehicles are always moving, warehouses span multiple regions, and drivers work remotely. Traditional on-premise web filtering appliances cannot protect this environment. Our cloud-native API is designed for exactly this challenge.

Deploy our filtering DNS resolver on fleet mobile hotspots, warehouse routers, and office firewalls. Every DNS query from every location is evaluated against the same 90-million-domain database with sub-5ms latency. Policy updates propagate instantly, so when a new content risk emerges, your entire fleet is protected simultaneously.

For warehouses with converged IT/OT networks, we support VLAN-aware policies that apply strict controls to automation systems while granting broader access to office workstations. Integration with existing MDM solutions extends protection to driver smartphones and tablets.

Mobile hotspot and cellular gateway integration
MDM-compatible DNS profiles for iOS and Android
VLAN-aware policy enforcement for converged networks
Offline caching for areas with intermittent connectivity

Case Study: National LTL Carrier

A less-than-truckload carrier operating 180 terminals and 8,000 tractors needed to comply with TSA Security Directive 1580-21. Their fragmented network environment included different firewall vendors at each terminal, multiple cellular providers for in-cab hotspots, and no centralized security policy.

By deploying our domain classification API as the DNS resolver across all terminals and in-cab hotspots, the carrier achieved uniform filtering in 10 business days. Terminal networks block unsafe content, and unauthorized remote-access domains. In-cab networks additionally block streaming and gaming categories to reduce distracted driving liability. A single compliance dashboard shows enforcement status across all 180 terminals.

"We unified security policy across 180 terminals and 8,000 trucks in under two weeks. Our TSA compliance posture went from non-existent to fully documented."
- VP of IT, National LTL Carrier

Transportation Web Filtering FAQ

Answers to common questions from fleet operators and logistics providers

Does this work on cellular-connected fleet vehicles?

Yes. Our DNS resolver works with any internet-connected device regardless of connection type. For fleet vehicles using cellular hotspots, configure the hotspot's DNS settings to point to our resolver. We also provide MDM-compatible configuration profiles that enforce DNS settings on driver mobile devices, ensuring protection persists even when drivers switch between cellular and WiFi networks.

How does this help with TSA Security Directive 1580-21?

TSA SD 1580-21 requires surface transportation operators to implement network segmentation, access control measures, and continuous monitoring. Our web filtering provides documented access control at the DNS layer, comprehensive logging for continuous monitoring requirements, and segment-aware policies that enforce different rules per network zone. We provide pre-formatted compliance reports mapped to directive requirements.

Can we block streaming on driver devices without blocking dispatch apps?

Absolutely. Our 59 content categories provide granular control. You can block streaming media, gaming, and gambling categories on driver network segments while keeping navigation, weather, communication, and fleet management domains fully accessible. Category-based filtering is far more maintainable than trying to blocklist individual domains.

What happens in areas with poor connectivity?

Our resolver supports local caching that maintains filtering even during brief connectivity interruptions. For prolonged offline periods, cached classifications continue to protect against previously observed domains. When connectivity resumes, the resolver synchronizes with our cloud database automatically. This is critical for trucks operating in rural areas with intermittent cellular coverage.

Do you support integration with fleet management platforms?

Yes. Our API integrates with major fleet management platforms including Samsara, Geotab, Omnitracs, and KeepTruckin via REST webhooks. When a vehicle's network triggers a high-severity block event, the alert can be correlated with vehicle location and driver assignment in your existing fleet management dashboard.

Web Filtering for Transportation