Network TAPs for government and defence networks

Network teams at these organisations run Network Critical visibility

Verified visibility across government agencies and defence test networks

Government agencies and defence programmes run some of the most distributed, highest-scrutiny networks in any sector, spanning legacy TDM voice circuits, modern IP services, and mission-critical test environments that cannot tolerate a single lost packet. SPAN cannot deliver the continuous, audit-ready capture that Zero Trust Architecture mandates and unified communications migrations demand. Network Critical's network TAPs and packet brokers give network administrators complete visibility across every layer of the network, without disrupting live traffic or adding configuration risk during a change window. The State of Maryland Department of IT deployed SmartNA-XL to monitor its transition from traditional TDM voice services to IP, maintaining quality of service and compliance evidence throughout.

Key challenges facing government and defense networks

Zero Trust segmentation blind spots: Zero Trust Architecture mandates require granular verification of every device and user, but security teams cannot enforce segmentation policy without full east-west visibility. SPAN's sampled captures leave gaps that undermine audit evidence. Network Critical's INVIKTUS closes that gap with invisible, policy-based zero trust enforcement.

Distributed agencies and multi-generation networks: Government and defence networks span decades of infrastructure, from legacy TDM voice circuits to modern 100G IP backbones, often across dozens of geographically separate sites. Network Critical's SmartNA-XL aggregates copper and fibre links from 1G to 40G into one hybrid TAP and packet broker platform, managed from a single pane of glass.

Compliance-grade audit trail requirements: Framework procurement and inspector general audits demand continuous, tamper-evident evidence of what crossed the network, not sampled snapshots. SPAN drops packets silently, with no alarm and no record of what it missed. Network Critical's packet brokers support RADIUS and TACACS+ authentication and SNMPv3 management for full accountability.

Vendor lock-in versus long procurement cycles: Long framework procurement cycles and new-vendor approval processes make agencies cautious about proprietary platforms with recurring licence fees. Tool-agnostic, perpetual-licence hardware that feeds any SIEM or NDR reduces re-procurement risk at contract renewal, while standards-based management keeps deployments auditable across successive framework cycles.

Why government and defense networks teams come to Network Critical

We need Zero Trust segmentation with real east-west visibility across every agency link.

Our TDM to IP migration must not disrupt a single live voice call.

Distributed agency sites need one visibility platform, not a dozen point tools.

Framework auditors keep asking for continuous, tamper-evident capture evidence we can't produce.

Our test rig cannot afford a single dropped or delayed packet, ever.

We are consolidating vendors and want transparent, perpetual licensing with no surprises.

Key capabilities for government and defense networks

Zero trust segmentation

Network Critical's INVIKTUS enforces Zero Trust Architecture policy at line rate without an IP or MAC address of its own, so it stays invisible to anyone probing the network. Policy-based Lock and Leave configuration keeps segmentation enforced with minimal ongoing administration.

Scale-out visibility for distributed agencies

SmartNA-PortPlus scales from 48 to 194 ports of 1G to 100G visibility in a single 1RU chassis, so agencies add capacity as sites and services grow without a forklift refresh. Drag-n-Vu's drag-and-drop interface lets administrators reconfigure without CLI expertise.

Audit-ready compliance capture

SNMPv3 management and RADIUS and TACACS+ authentication give agencies the accountability trail framework auditors expect, while non-blocking 1.8 Tbps throughput ensures continuous, 100% packet capture with no sampling gaps to explain during an inspection.

Fail-safe monitoring for legacy and modern links

Network Critical's SmartNA-XL combines passive, active, and bypass TAP modules in one hybrid chassis, so live TDM and IP traffic keeps flowing even if the unit loses power, a critical safeguard during multi-generation network migrations.

Agencies modernising unified communications and enforcing a Zero Trust mandate need a packet broker platform that scales with the mission, not against it. Network Critical's SmartNA-PortPlus is built for that scale.

SmartNA-PortPlus: scale-out packet broker for government and defence networks

Scales from 48 to 194 ports of 1G, 10G, 25G, 40G, and 100G visibility in a single chassis
Non-blocking 1.8 Tbps line-rate throughput with zero packet loss
Dual hot-swap power supplies and fans for continuous operation at remote or hardened sites
Session-aware load balancing by IP address, protocol, port, VLAN, or MAC address
RADIUS and TACACS+ authentication plus SNMPv3 management for audit-ready accountability
Drag-n-Vu drag-and-drop configuration, no CLI expertise required
Custom P-Tag traffic processing for complex, multi-agency workflows
Compact single 1RU chassis, expandable to 5RU without replacing the base unit

Explore SmartNA-PortPlus

When SmartNA-PortPlus is the right fit

You're modernising unified communications from TDM to IP and need continuous QoS evidence throughout the migration
You operate distributed agency sites that need one visibility platform instead of a dozen point tools
You're enforcing a Zero Trust Architecture mandate and need audit-ready, tamper-evident capture to prove segmentation policy
You're consolidating vendors under a framework refresh and want transparent, perpetual licensing with no recurring fees

Case studies: network TAPs for government and defence networks

State of Maryland Department of IT

The Maryland Department of Information Technology used Network Critical's SmartNA-XL to migrate from traditional TDM voice services to IP while maintaining full traffic visibility across every network layer. Five 1/10/40G slots supported passive, active, and bypass TAP modules, giving the department continuous QoS and QoE evidence throughout the transition.

Airbus

Airbus deployed Network Critical's Network TAPs across multiple test rigs to capture steering, braking, landing, and avionics data with zero impact on live test traffic. The failsafe TAPs helped Airbus complete every first flight test objective on schedule, and the relationship now extends to test infrastructure for the A400M military aircraft programme.

SPAN cannot deliver audit-ready capture

SPAN drops packets silently under load, with no alarm when they go missing. For agencies proving Zero Trust segmentation or framework compliance, that gap turns an audit into a liability. Network Critical's INVIKTUS and packet brokers capture 100% of traffic with a tamper-evident record auditors can trust.

SPAN cannot scale across distributed agency networks

Most switches support only two to four concurrent SPAN sessions, so agencies running dozens of sites end up with fragmented, inconsistent visibility. Network Critical's SmartNA-PortPlus scales to 194 ports in one chassis, giving distributed networks one visibility platform instead of a patchwork of switch configurations.

SPAN risks live traffic during TDM to IP migration

Reconfiguring SPAN on a live switch during a unified communications migration risks the very voice and data traffic it is meant to monitor. Network Critical's passive and hybrid TAPs tap the link without touching switch configuration, so migration testing continues without risking service disruption.

Why choose Network Critical for network TAPs for government and defence networks

Network Critical delivers enterprise-grade network visibility for government and defence networks without the licence fees or complexity of traditional visibility platforms. Perpetual hardware licensing gives agencies a predictable capital cost instead of a subscription that grows at every contract renewal.

Drag-n-Vu's drag-and-drop configuration means network administrators deploy and reconfigure without specialist engineering support, a real advantage for agencies balancing long procurement cycles against operational deadlines. Network Critical has manufactured in the UK for over 20 years, with a US office and 24/7 support.

The State of Maryland Department of IT trusted Network Critical's SmartNA-XL through its TDM to IP migration, and Airbus has deployed Network TAPs across its test rigs. The same scale-out architecture underpins Vodafone's multi-generation network monitoring, proof the platform holds up under decades of accumulated infrastructure, and it stands behind INVIKTUS zero trust deployments too.

Frequently asked questions about network TAPs for government and defence networks

A network TAP is a hardware device that copies traffic from a physical link for monitoring, without touching the live data path. For government and defence networks, that matters because Zero Trust mandates and framework audits demand continuous, accurate capture that SPAN cannot guarantee. Read our explainer on network TAPs for more detail.
A network TAP passively copies all traffic at line rate with no CPU contention, while SPAN ports share switch resources and drop packets under load. For compliance capture, that difference is the gap between an audit-ready record and a silent blind spot. Network Critical's SmartNA-PortPlus is built to close that gap. See our comparison of network TAPs vs SPAN for a full breakdown.
When SPAN drops packets, no alarm fires, and the monitoring tool simply reports whatever traffic it received as complete. During a Zero Trust Architecture audit, that means gaps in segmentation evidence go unnoticed until an auditor asks a question nobody can answer. Network Critical's INVIKTUS closes that gap with continuous, tamper-evident capture.
Evaluate packet loss under peak load, port density against your distributed site count, authentication support such as RADIUS and TACACS+, and whether the platform scales without a forklift upgrade. Network Critical's SmartNA-PortPlus covers 48 to 194 ports in a single chassis with SNMPv3 management built in for audit accountability.
SmartNA-PortPlus outputs standard PCAP traffic to any SIEM, NDR, or analysis tool an agency already runs, with no proprietary format or custom integration required. Drag-n-Vu lets administrators map ports and apply filters through a drag-and-drop interface rather than CLI configuration.
Yes. INVIKTUS is built on zero trust principles, validating every user, application, and device before granting access, and it carries no IP or MAC address, so it stays invisible to anyone probing the network for a route to attack. Policy-based Lock and Leave configuration keeps a segmentation policy enforced with minimal ongoing administration.

Network Critical's SmartNA-XL supports passive, active, and bypass TAP modules in one hybrid chassis, so agencies can tap copper TDM links and fibre IP links side by side during a phased migration. Traffic continues to pass even if the unit loses power, protecting live voice services throughout the cutover.
The State of Maryland Department of IT used SmartNA-XL to monitor its migration from TDM voice to IP services, and Airbus deployed Network TAPs across test rigs supporting the A400M military aircraft programme. Both prove reliable, non-intrusive capture where a dropped packet is not an option.
Network Critical's perpetual hardware licensing avoids the recurring subscription fees that enterprise visibility platforms charge per port, giving agencies a predictable capital cost instead of an operating expense that grows at every contract renewal. That model fits public-sector procurement cycles better than a recurring licence. Explore SmartNA-PortPlus for the full range.
Network Critical provides 24/7 support from UK and US teams, backed by more than 20 years of deployments across telecom, finance, energy, and government networks. SmartNA-PortPlus and Drag-n-Vu's management interface let in-house teams handle day-to-day configuration changes without waiting on a vendor engineer.
Zero Trust Architecture requires continuous verification of every user, device, and application, which means security teams need east-west visibility across segments, not just perimeter monitoring. INVIKTUS enforces that segmentation at line rate while remaining invisible on the network, supporting the granular verification a Zero Trust mandate requires.
Yes. Network Critical's Network TAPs are deployed across both operational IT networks and specialist test environments, including Airbus's aircraft test rigs used for the A400M military aircraft programme, without exposing test data to production tools or vice versa. Passive designs add zero latency to either environment.