Legacy NAC is Infrastructure-Heavy
- VLANs and switches required
- Difficult to scale to branches
- Costly hardware & maintenance
COSGrid ZT-NAC
Secure Network Access
through Zero Trust
Enforce identity-based access at the moment of connection — agent-based, firewall-native, no switch reconfiguration required.
What is COSGrid ZT-NAC?
COSGrid’s Zero Trust NAC is a modern, agent-based network access control solution designed to enforce strict access policies the moment a device connects to your LAN without requiring legacy VLAN segmentation or manual switch configurations.
Challenges
LAN Access is Blindly Trusted
- No user identity enforcement
- Devices access LAN instantly
- No posture or compliance check
Remote + Office creates Policy Gaps
- Separate controls for each zone
- Split-tunnel risks at branches
- Inconsistent enforcement experience
Compliance Needs Continuous Proof
- Audit trails often incomplete
- No visibility into LAN users
- Difficult to prove Zero Trust
Key Features of
VPN-Free, Firewall-Based Architecture
- •
Uses native firewall rules — no tunnels needed.
Identity-First Access Control
- •
Grants access based on user, not just device.
Zero Trust Ready
- •
Applies consistent policies on-prem and remote.
Real-Time Device Posture Checks
- •
Validates patch, AV, encryption, and compliance instantly.
Dynamic LAN Access Segmentation
- •
Allows scoped LAN access based on identity and context.
Agent-Led Policy Enforcement
- •
Enforces rules without switches or VLAN changes.
Differentiators
What Sets Our ZT-NAC Apart?
Micro-Agent Footprint with OS-Level Enforcement
Micro-Agent Footprint with OS-Level Enforcement
- Ultra-Lightweight Agent (<2 MB)
- Native Firewall-Based Policy Enforcement
Continuous Posture Validation Beyond Initial Authentication
Continuous Posture Validation Beyond Initial Authentication
- Continuous Posture Checks
- Dynamic, Compliance-Driven Access
Endpoint-Centric Micro-Segmentation
Endpoint-Centric Micro-Segmentation
- VLAN-Free Endpoint Segmentation
- Lateral Movement Prevention By Design
Unified Agent for LAN and Remote Access
Unified Agent for LAN and Remote Access
- One Agent, All Access Secured
- Single Console For Policy Control
Benefits
ZT-NAC Impact
Seconds
Rogue device containment
Unauthorized devices detected and quarantined automatically
Zero
Deployment disruption
VLAN changes not needed, works with existing switches
100%
Network coverage
LAN segments protected, unauthenticated users blocked
Multi-layer security
Blocks unauthenticated LAN and internet users, stops rogue devices
Zero-touch rollout
Zero-touch deployment across all branch and HQ sites
Intelligent containment
Least-privilege access, stops lateral movement in trusted LAN
Audit-ready
Detailed access audit trails, compliance logs generated automatically
Use cases
Built for every access scenario
Deny-by-default access, continuously enforced
Every device is validated at the point of connection, with deny-by-default firewall policies applied automatically. Patch status and antivirus are monitored continuously, with non-compliant devices automatically remediated — no manual ticket required.
Privacy-respecting access for unmanaged devices
Personal and contractor devices are profiled and segmented automatically, with contextual access rules applied based on who is connecting and from where. Registration-based onboarding ensures every external user completes a full audit trail before touching any resource.
Temporary segments, zero corporate exposure
Guests are placed into temporary micro-segments the moment they connect, with all guest-to-corporate network communication restricted by default. No configuration required — isolation is enforced automatically for every guest session.
Unauthorized devices found and contained in seconds
Unauthorized devices are detected the moment they appear on the network, with suspicious endpoints automatically quarantined within seconds — stopping infiltration before it can spread.
COSGrid ZT-NAC - FAQs
Have a question about ZT-NAC?
What is COSGrid ZT-NAC?
COSGrid ZT-NAC is an agent-based Zero Trust Network Access Control solution that enforces identity-first access policies the moment a device connects to your LAN — with a micro-agent under 2MB, native firewall-based policy enforcement, and no VLAN changes, switch reconfiguration, or legacy NAC hardware required.
How is ZT-NAC different from traditional NAC solutions? Legacy NAC depends on VLAN segmentation, switch configuration, and hardware-heavy infrastructure that's expensive to deploy and nearly impossible to scale to branches. COSGrid ZT-NAC enforces identity-based access through a lightweight agent and native firewall rules — no switches reconfigured, no VLANs created, and the same policy applies on-prem and to remote users from one console.
What does "deny-by-default" mean in the context of ZT-NAC? Deny-by-default means every device is validated at the point of LAN connection before receiving any network access — patch status, antivirus, and encryption are checked instantly, and access is denied automatically unless all checks pass. This is the opposite of how most LAN environments work today, where devices join the network first and are monitored afterward.
