Network Access Control

Know Every Device. Control Every Connection.

If any device that plugs in or connects to your Wi-Fi gets network access - you don't have access control. You have an open door.

SRS Networks deploys enterprise NAC infrastructure - 802.1X authentication, RADIUS servers, endpoint posture checks, and guest portals - so you control who and what gets on your network, every time.

The Problem

Your Network Has No Idea What's Connected to It

Most enterprise networks authenticate users at the application layer but leave the network layer wide open. Any device that gets physical or wireless access is in - and that's a problem that compounds as your environment grows.

Any Device Can Plug In and Connect

Without port-based access control, any laptop, personal phone, or rogue device that hits an open jack or connects to your wireless gets network access. You have no say in it.

No Visibility Into What's Connected

Most networks have zero device inventory at the port level. You don't know if it's a corporate laptop, a contractor's tablet, a printer, or something that doesn't belong there.

Rogue Devices Are a Real Threat

An unauthorized device that lands on your corporate segment - intentional or not - can scan the network, move laterally, and exfiltrate data before anyone notices. NAC stops that.

Guest Traffic Mixed with Corporate

If your guest Wi-Fi isn't isolated, visitors are on the same segment as your file servers and internal apps. One compromised guest device is a direct path into your environment.

Compliance Failures from Uncontrolled Access

HIPAA, PCI-DSS, and SOC 2 all require demonstrable network access controls. Without NAC, you can't prove which devices accessed sensitive segments - and that means audit failures.

The Solution

NAC Infrastructure Built to Actually Enforce Policy.

SRS Networks designs and deploys NAC from the ground up - not just enabling a feature on a switch, but building the full authentication infrastructure that makes access control reliable, scalable, and auditable. We handle 802.1X config, RADIUS deployment, directory integration, endpoint posture, and guest portal setup as a single cohesive engagement.

802.1X authentication configured on every switch port and wireless access point
RADIUS server deployed and integrated with Active Directory or your identity provider
Endpoint posture checks that enforce compliance before granting access
Isolated guest portals with bandwidth controls and session limits
Device profiling that identifies and segments every endpoint automatically
Enterprise network switch infrastructure for NAC deployment
What your network looks like post-NAC deployment
Wired
Every port requires 802.1X authentication before granting VLAN access
Wireless
Every SSID backed by RADIUS - no open corporate SSIDs
Guests
Isolated portal with time-limited sessions and zero corporate access
Devices
Profiled and auto-assigned to the correct VLAN by device class
Posture
Non-compliant endpoints quarantined until remediation is complete
Zero trust at the port level.
Designed and deployed by SRS Networks
What's Included

Full-Stack NAC Deployment Coverage

From 802.1X policy design through RADIUS build-out, guest portal configuration, and endpoint profiling - SRS Networks handles every layer of your NAC implementation.

802.1X Authentication

Port-based authentication that requires every device to present valid credentials before the switch or AP grants any network access - wired or wireless.

Per-port 802.1X config on managed switches
Wireless authentication via RADIUS
EAP-TLS and PEAP support

RADIUS Server Deployment

We deploy, configure, and integrate your RADIUS infrastructure - whether that's NPS on Windows Server, FreeRADIUS, or a cloud-based solution - and tie it directly to your directory.

RADIUS server build and configuration
Active Directory / LDAP integration
Certificate authority setup if needed

Endpoint Posture & Compliance

Before a device gets on the network, we can enforce compliance checks - is the OS patched? Is AV running? Is it domain-joined? Non-compliant endpoints land in a quarantine VLAN.

Posture assessment policy design
Quarantine VLAN configuration
Remediation workflow setup

Guest Access & Device Profiling

A branded captive portal for guest onboarding with time-limited sessions, bandwidth throttling, and full isolation from corporate resources - plus automatic profiling of every endpoint class.

Guest portal customization
Device fingerprinting and classification
VLAN assignment by device type
The Difference

Open Network vs. SRS NAC-Controlled Network

What changes when you stop treating network access as an afterthought and start treating it as an enforcement boundary.

Category
Without NAC
SRS NAC Deployment
Device onboarding
Any device connects automatically
Every device authenticated before access
Network visibility
No inventory at the port level
Full device profiling and classification
Guest traffic
Mixed with corporate segments
Isolated portal with bandwidth controls
Rogue devices
Undetected until damage is done
Blocked at port level before network entry
BYOD policy
No enforcement - assume the worst
Per-device policies based on posture and identity
Compliance posture
Cannot prove access control to auditors
Audit-ready logs and policy documentation
Medical / IoT devices
Land anywhere, unclassified
Auto-profiled and segmented to correct VLAN
Incident response
No way to isolate a specific device fast
Remote port shutdown or quarantine in seconds
Real-World Use Cases

Environments That Depend on NAC

Network access control isn't optional when you're operating in regulated industries or managing environments with mixed device types and high-stakes connectivity.

Healthcare Facilities

Medical device profiling ensures infusion pumps, imaging equipment, and nurse call systems land on isolated clinical VLANs - away from guest Wi-Fi and staff laptops. HIPAA-required access controls, fully implemented.

Corporate Offices with BYOD

Employees want to use personal phones and tablets. NAC lets you define exactly what access those devices get - internet only, limited app access, or full corporate - based on device posture and identity.

Education Campuses

Student devices, faculty workstations, and IoT sensors all share the same physical infrastructure. NAC segments them cleanly, automates onboarding at scale, and keeps administrative systems isolated.

Retail and PCI Environments

PCI-DSS requires strict isolation of cardholder data environments. NAC enforces that isolation at the port level - no POS terminal misconfiguration can accidentally land a device on the wrong segment.

Why SRS Networks

NAC That Works on Day One - Not After Three Revisions.

NAC deployments fail when teams underestimate policy complexity, skip endpoint testing, or leave directory integration half-finished. SRS Networks has designed and deployed NAC in healthcare, education, corporate, and retail environments - and we know where every project goes wrong before it does.

Deep experience with Cisco ISE, Aruba ClearPass, and Microsoft NPS deployments
End-to-end ownership - from policy design through switch config to user acceptance testing
Integration with your existing AD, PKI, and firewall infrastructure
Documentation and runbooks handed off at every engagement close
802.1X
Port-Based Auth
RADIUS
Server Deployment
BYOD
Policy Enforcement
100%
Device Visibility
Related Services

Explore More from SRS Networks

For ongoing managed IT services and support, visit srsnetworks.net

Ready to Lock Down Network Access?

Stop guessing what's on your network. We'll design and deploy a NAC architecture that authenticates every device, enforces every policy, and gives you complete visibility into what's connected - and what isn't.

Network Access Control (NAC) | SRS Networks