HPE Aruba Networking ClearPass vs Forescout Platform: Network Access Control and Device Visibility Compared

HPE Aruba Networking ClearPass and the Forescout Platform overlap on network access control but approach the problem from different starting points. ClearPass is a deep, standards-based policy engine built around 802.1X, RADIUS, and TACACS+ that authenticates and segments users and devices across multivendor infrastructure. Forescout starts from agentless visibility, discovering and classifying everything on the network, including OT, IoT, and medical devices, then enforcing zero-trust policy through eyeControl. The decision usually comes down to whether your priority is granular access policy and AAA or the broadest passive visibility into unmanaged and unmanageable assets. This guide compares both across agentless visibility, OT and IoT coverage, policy enforcement, integration breadth, deployment complexity, and licensing so the right buyer can choose with confidence.

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The short answer

Pick HPE Aruba Networking ClearPass when your priority is a deep 802.1X policy engine with full RADIUS and TACACS+ AAA, strong guest and BYOD onboarding, and role-based enforcement that fits naturally into HPE Aruba and Juniper estates. Pick the Forescout Platform when agentless visibility is the goal, especially across large fleets of OT, IoT, and medical devices that cannot run agents and where passive discovery without disrupting sensitive systems matters most. Forescout also appeals to buyers who want a single asset-intelligence layer spanning IT and OT. ClearPass typically wins on AAA depth, onboarding, and tight switch-level enforcement; Forescout typically wins on breadth and depth of agentless device discovery and OT context. Many large environments run both, using Forescout for visibility and ClearPass for 802.1X enforcement.

HPE Aruba Networking ClearPass vs Forescout Platform, head to head

HPE Aruba Networking ClearPass

Forescout Platform

Agentless Visibility

Agentless profiling plus Device Insight cloud machine learning and deep packet inspection.

Built around agentless discovery using more than twenty passive and active techniques across heterogeneous networks.advantage

OT / IoT / Medical Coverage

Profiles and segments IoT and medical devices, with strongest depth in IT and standard enterprise endpoints.

Deep OT, IoT, and medical device visibility, including passive-only profiling for sensitive systems via eyeInspect.advantage

Policy Enforcement & AAA

Context-based policy engine with full RADIUS and TACACS+, 802.1X, MAB, and OnConnect non-RADIUS enforcement.advantage

eyeControl enforces zero-trust least-privilege policy; AAA is less central than ClearPass standards-based 802.1X.

Guest & BYOD

Built-in guest portals and the Onboard module for certificate-based provisioning across major device OSes.advantage

Focused on visibility and control of devices already present; lighter on guest and BYOD onboarding.

Integration Breadth

Integrates with Aruba Central, the HPE Aruba 360 Secure Fabric, and many security tools via APIs.

Broad ecosystem of orchestration integrations to share device context with firewalls, SIEM, and EDR.

Segmentation

Dynamic role-based segmentation with downloadable roles, VLANs, and ACLs across multivendor gear.

Policy-driven segmentation and automated response using rich device context, including IP and OT environments.

Multivendor Support

Vendor-agnostic across Cisco, Aruba, Juniper, Meraki, and third-party wired, wireless, and VPN gear.

Vendor-agnostic by design; discovers and controls across heterogeneous infrastructure without requiring its own hardware.

Deployment Complexity

Hardware or virtual appliances with publisher and subscriber clustering; policy design takes planning.advantage

Powerful but can be complex to deploy and tune at scale across large OT and IT estates.

Licensing & Value

Modular Platform plus Access, Onboard, and OnGuard licensing; buy only what you need.advantage

Per-device licensing across eyeSight, eyeControl, and eyeInspect modules; can rise with OT scope.

Federal & TAA

Available on federal vehicles; we can source TAA-compliant ClearPass configurations.

Validated for government and DoD IoT security use cases; widely deployed in federal environments.

Specifications side by side

Vendor / parent: HPE Aruba Networking; Forescout Technologies
Core function: Network access control (NAC) and policy management; Device visibility and control across IT, OT, and IoT
Primary strength: Deep 802.1X policy engine and AAA; Agentless asset discovery and visibility
Authentication: 802.1X, MAC auth (MAB), web auth, EAP types; Integrates with 802.1X and supports agentless enforcement methods
AAA protocols: RADIUS and TACACS+ (TACACS+ for device admin); Less AAA-centric; focuses on visibility and policy control
Agent model: Agentless profiling plus optional OnGuard agents for posture; Agentless using passive and active monitoring techniques
Device profiling: Built-in profiling plus Device Insight cloud machine learning; eyeSight discovery using more than twenty techniques
OT / ICS visibility: Supported, with primary depth in IT and enterprise endpoints; Deep OT and ICS visibility via eyeInspect, including passive-only
Enforcement module: ClearPass Policy Manager with role-based enforcement; eyeControl for zero-trust policy and automated response
BYOD onboarding: ClearPass Onboard certificate provisioning module; Lighter; focused on existing device control
Posture / endpoint health: ClearPass OnGuard (persistent and dissolvable); Compliance and posture inferred from rich device context
Deployment options: Hardware appliance or virtual appliance; Appliance, virtual, and cloud-managed collectors
Licensing model: Platform plus Access, Onboard, OnGuard (modular); Per-device across eyeSight, eyeControl, eyeInspect

Where HPE Aruba Networking ClearPass wins

Deep, standards-based 802.1X policy engine with full RADIUS and TACACS+ for both network access and device administration
Built-in guest portals and the Onboard module for certificate-based BYOD across Windows, macOS, iOS, Android, ChromeOS, and Ubuntu
ClearPass OnGuard delivers detailed persistent and dissolvable endpoint posture over wired, wireless, and VPN
Dynamic role-based segmentation enforced directly at the switch and AP across multivendor infrastructure
Modular licensing lets you buy only the Access, Onboard, or OnGuard capabilities you need
Fits naturally into HPE Aruba and Juniper estates after the HPE networking consolidation

Where Forescout Platform wins

Industry-leading agentless visibility using more than twenty passive and active discovery techniques
Deep OT, IoT, and medical device coverage, including passive-only profiling that avoids disrupting sensitive systems
Single asset-intelligence layer spanning IT and OT, validated for government and DoD IoT security use cases
Broad orchestration integrations that share device context with firewalls, SIEM, and EDR tools
Vendor-agnostic discovery and control that does not require replacing existing network hardware

Which one should you buy?

Industrial or utility site with large OT and ICS estates that cannot tolerate active scanning

Pick Forescout Platform. Passive-only profiling through eyeInspect discovers and classifies sensitive OT devices without disrupting critical processes.

Enterprise that needs full 802.1X plus TACACS+ device administration across mixed switching vendors

Pick HPE Aruba Networking ClearPass. ClearPass delivers a deep policy engine with both RADIUS and TACACS+ for unified AAA and switch-level enforcement.

Campus with heavy guest and BYOD demand needing certificate onboarding across many device OSes

Pick HPE Aruba Networking ClearPass. ClearPass Onboard and built-in guest portals provide the broadest self-service certificate provisioning workflows.

Healthcare network needing to inventory and risk-score thousands of unmanaged medical and IoT devices

Pick Forescout Platform. Agentless discovery and rich device context give the deepest visibility into IoMT and unmanaged assets for risk reduction.

Frequently asked

What is the main difference between HPE Aruba Networking ClearPass and the Forescout Platform?

Both do network access control, but from different angles. ClearPass is a deep 802.1X policy engine with full RADIUS and TACACS+ AAA and strong onboarding. Forescout leads with agentless visibility, discovering and classifying everything on the network including OT and IoT, then enforcing policy through eyeControl. ClearPass favors policy and AAA depth; Forescout favors visibility breadth.

Is ClearPass or Forescout better for OT and IoT visibility?

Forescout is generally stronger for pure OT, IoT, and medical device visibility. It uses many passive and active discovery techniques and offers passive-only profiling through eyeInspect that avoids disrupting sensitive systems. ClearPass profiles IoT well and adds Device Insight, but Forescout's depth in OT and ICS environments is a recognized strength.

Can you run ClearPass and Forescout together?

Yes, and many large environments do. A common pattern uses Forescout for broad agentless asset discovery and risk context, then feeds that intelligence to ClearPass for 802.1X enforcement and AAA. The two can complement each other rather than being strictly either-or.

Which platform has stronger access control and AAA?

ClearPass generally leads on access control and AAA. It is built around standards-based 802.1X with full RADIUS and TACACS+, MAC authentication for headless devices, and OnConnect non-RADIUS enforcement. Forescout's eyeControl enforces zero-trust policy effectively but is less AAA-centric than ClearPass.

How do ClearPass and Forescout handle guest access and BYOD?

ClearPass is the stronger fit for guest and BYOD. It includes built-in guest portals and the Onboard module for certificate-based provisioning across major operating systems. Forescout focuses on discovering and controlling devices already on the network and is lighter on guest and BYOD onboarding workflows.

How does licensing and deployment complexity compare?

ClearPass uses modular licensing, a Platform license plus Access, Onboard, and OnGuard, with appliance or virtual deployment and publisher and subscriber clustering. Forescout licenses per device across eyeSight, eyeControl, and eyeInspect, and can be more complex to deploy and tune at scale, especially across large OT estates.

Where can I buy HPE Aruba Networking ClearPass?

Uniqcli is an authorized HPE partner and can quote and scope HPE Aruba Networking ClearPass for your environment. We source TAA-compliant configurations and support federal procurement through GPC direct, Simplified Acquisition Procedures (SAP), FAR-based purchase orders, and GSA eBuy, with no payment required up front.

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