Connection
The device requests access through the wired network or Wi-Fi.
NETWORK ACCESS CONTROL
Being connected to the network does not mean being authorized to access everything.
Users, corporate laptops, personal devices, printers, IP phones, IoT equipment, and other assets now share the same connectivity infrastructure.
Without context, the network may know that something has connected without understanding who or what is using that connection.
Add Solution designs and implements Network Access Control (NAC) architectures to identify, authenticate, classify, and apply access policies based on identity, device, and context, integrating security into wired and wireless networks.
EMPLOYEEIoTGUEST
NAC / POLICY
CORPORATEIoTGUESTRESTRICTED
ENGENHARIA APLICADA
Acesso à rede deve considerar identidade, dispositivo e contexto.
A Add Solution estrutura NAC com descoberta, classificação, autenticação e políticas graduais para controlar quem se conecta e a quais recursos.
Arquitetura, execução e operação tratadas como partes da mesma responsabilidade.
FROM CONNECTIVITY TO CONTROL
The switch port or Wi-Fi are entry points to the infrastructure.
Simply obtaining connectivity should not determine which resources are accessible. NAC turns a connection into a context-driven decision.
Identification
The architecture seeks to understand who or what is connected.
Authentication
Identity is validated through the available mechanisms.
Context
Device, location, profile, and posture when supported.
Policy
Rules determine the conditions of access.
Authorization
The appropriate profile is applied to the connection.
Access
Permitted resources become available.
The network provides connectivity. NAC helps determine the conditions under which it will be granted.
DEVICE VISIBILITY
It is difficult to control what the organization cannot identify.
Profiling can combine different attributes and signals to assist classification, without promising perfect identification of every device.
01Laptops
02Desktops
03Smartphones
04Printers
05IP phones
06IoT
07Infrastructure
08Non-corporate
802.1X, RADIUS & IDENTITY
Access can begin with identity, not only with the physical port.
Supplicant, switch or access point, RADIUS/NAC, identity source, policy, and access form a chain that can use 802.1X, EAP, certificates, user, machine, and directories according to the architecture.
SUPPLICANT → SWITCH / AP → RADIUS / NAC → IDENTITY → POLICY → ACCESS
Not every deployment requires exactly the same elements or methods.
Who or what are you?
Authentication seeks to confirm the identity presented by a user, machine, or device through the available mechanisms.
What can you access?
Profile, group, device type, location, context, and policy guide authorization.
Confirming an identity does not mean granting unrestricted access.
DYNAMIC POLICIES
The same physical network can provide different access for different contexts.
VLANs, ACLs, roles, segments, restrictions, and quarantine when applicable can be assigned according to the capabilities of the solution.
EMPLOYEE → CORPORATE · GUEST → INTERNET · IoT → REQUIRED SERVICES · NONCOMPLIANT → RESTRICTED
The policy should not disappear when the user switches from a cable to Wi-Fi.
Switching, SSIDs, access points, controllers, authentication, and segmentation can be part of the same control strategy.
Corporate Networks Corporate Wi-FiNot everything has a user entering credentials.
Printers, phones, cameras, IoT, and legacy devices may require profiling or MAB when applicable. Authentication based only on MAC does not provide the same security as 802.1X.
Different devices require different strategies.
The less security an endpoint has, the more important the network around it may become.
Discovery, classification, segmentation, required communication, restriction, and visibility can reduce reach, without turning NAC into complete device protection.
Network Security & Firewall Video IntelligencePersonal, corporate, and guest devices do not need to receive the same level of trust.
Onboarding, authentication, segmentation, differentiated policies, limited access, privacy, portal, and access duration when supported help separate contexts.
Providing visitor connectivity does not require placing them inside the corporate network.
Identity answers who is accessing. Posture can add context about the device.
Certain solutions can assess state, software, agent, configurations, compliance, and other signals. This is not equivalent to EDR and does not guarantee a secure endpoint.
Endpoint SecurityNAC controls entry. Segmentation helps control reach.
NAC, switching, wireless, firewall, and segmentation play complementary roles.
Authentication answers who entered. Segmentation helps define how far they can go.Network Security & Firewall
Access context can enrich controls between zones and applications.
Identity, device, group, tags, roles, and events can be shared when integration is supported. NAC controls network access; the firewall controls communications.
NAC can be part of Zero Trust. It is not Zero Trust on its own.
Identity, device, context, least privilege, verification, segmentation, and visibility guide the approach.
PAM & Identity SecurityNAC IN INDUSTRIAL ENVIRONMENTS
Control needs to respect operational constraints.
Legacy equipment, specific protocols, sensitive devices, and availability requirements demand a careful assessment. NAC can support visibility and control without justifying indiscriminate activation of 802.1X in OT.
Industrial NetworksPROGRESSIVE DEPLOYMENT
Access control needs to be introduced with control over the change itself.
Understanding the environment before broad enforcement reduces operational risk. Gain visibility first. Then apply control.
01DiscoverUsers, devices, and infrastructure.
02ObserveBehavior without broad enforcement.
03ClassifyProfiles, contexts, and exceptions.
04Define policiesAccess aligned with operations.
05PilotValidate within a controlled scope.
06ValidateConfirm behavior and diagnostics.
07ExpandExpand control progressively.
08OperateMonitor changes and events.
Before implementation, we need to know whether the network is ready.
Switches, wireless, 802.1X, RADIUS, directories, PKI when applicable, endpoints, IoT, VLANs, sites, policies, and legacy devices make up the assessment.
Assess your network readinessThe problem can occur at any stage of the decision.
Logs, supplicant, certificates, switch/AP, RADIUS, identity, policy, VLAN, ACL, DHCP, DNS, and endpoint need to be investigated as a chain.
ENDPOINT → SUPPLICANT → SWITCH/AP → RADIUS → IDENTITY → POLICY → NETWORK
VISIBILITY & OPERATIONS
Policies need to keep pace with new devices and contexts.
Authentications, failures, devices, profiles, exceptions, and events need to be monitored continuously.
SIEM & SOC AI & Observability Services & OperationsADD SOLUTION METHOD
From discovery to continuously controlled access.
More than 15 years of experience connecting networking, wireless, identity, Cybersecurity, and operations — with an understanding of the network where control will be implemented.
- 01
Discover
Users, devices, and infrastructure.
- 02
Classify
Profiles and contexts.
- 03
Integrate
Network, wireless, and identity.
- 04
Define
Access policies.
- 05
Pilot
Validate before expanding.
- 06
Control
Apply policies.
- 07
Observe
Monitor authentications and events.
- 08
Evolve
Adapt policies to changes.
TECHNOLOGIES & PRODUCTS
Here, we deliver NAC architecture, integration, and implementation.
Products and vendors belong on the technology pages. The solution starts with identity, infrastructure, context, and policies.
Cybersecurity and Networking TechnologiesPERGUNTAS FREQUENTES
Decisões importantes sobre Controle de Acesso à Rede (NAC)
Respostas objetivas para dúvidas técnicas e operacionais que costumam surgir antes de um projeto.
01NAC impede todos os acessos indevidos?
Não. NAC adiciona identidade, dispositivo e contexto à decisão de acesso, mas precisa integrar-se a outros controles e à operação.
02Toda implantação NAC utiliza 802.1X?
Não necessariamente. A arquitetura depende da infraestrutura, dos dispositivos e das capacidades da solução. Dispositivos legados podem exigir alternativas controladas.
03MAB possui a mesma segurança que 802.1X?
Não. MAC Authentication Bypass pode apoiar dispositivos sem supplicant, mas autenticação baseada apenas em MAC possui limitações próprias.
04NAC substitui firewall ou EDR?
Não. NAC controla e contextualiza o acesso à rede; firewall controla comunicações e EDR protege e observa endpoints.
05NAC é uma solução Zero Trust?
NAC pode participar de uma estratégia Zero Trust, mas não representa a abordagem completa isoladamente.
06É possível implantar NAC gradualmente?
Sim. Descoberta, observação, classificação, políticas, piloto, validação e expansão reduzem riscos da mudança e ajudam a preparar a operação.
FALE COM UM ESPECIALISTA
Vamos conversar sobre Controle de Acesso à Rede (NAC).
Share the context of your environment, the perceived impacts and the results your organization seeks. Add Solution will direct the conversation to the most appropriate experts.
CONTEXTO DA CONVERSAControle de Acesso à Rede (NAC)Origem e interesse são registrados automaticamente no atendimento.