Immediate visibility into your network
An up-to-date and historical overview of all connected devices. Which devices are connected? Where are they located? Via which switch port? In which VLAN?
Do you know who is on your network?
With Belden macmon Network Access Control, 4net helps organisations give devices, users and external parties controlled access to IT and OT networks.
In modern enterprise and industrial networks, a firewall alone is no longer enough. Laptops, machines, cameras, suppliers, maintenance partners and unknown devices connect to the network every day. macmon NAC provides insight, control and automatic access rules so that only trusted devices get access in the right place. Belden macmon NAC gives organisations greater visibility, secure authentication and fine-grained access control so that only trusted devices gain access to the right network segments.
Unknown devices are an underestimated risk
Many organisations lack full visibility into what is actually connected to their network. That may seem harmless at first glance, but every unknown device can pose a potential risk.
Think of external laptops from suppliers, older machines or PLCs, cameras, printers, IoT devices, temporary installations or switch ports that were once activated but never followed up.
Devices that are moved, replaced or reconnected internally also often fail to appear automatically. Especially in environments where IT and OT networks converge, this can quickly become complex.
A device that "just works" today can become a vulnerability tomorrow if it is not known, controlled or correctly segmented.
With Network Access Control, you regain control of your network. You see which devices are connected, where they are located and whether they may access the correct network segment.
Because what you cannot see, you cannot protect.
Network Access Control: grant access based on rules, not by chance
Network Access Control determines which devices and users are granted access to the network.
macmon NAC protects networks against unwanted devices, provides an up-to-date overview of all connected devices and supports central management of switches via SNMP or SSH/Telnet.
Why Belden macmon NAC?
Automatic access control
Devices only gain access when they meet the configured rules.
Dynamic VLAN segmentation
macmon supports simple and dynamic VLAN concepts, so devices are automatically placed in the correct network zone.
Fits into existing networks
macmon is vendor-independent and integrates with existing switches and infrastructure. You do not need to replace your entire network to gain more control and visibility.
Discover how devices are automatically detected, validated and assigned to the correct network zone.
For IT and OT networks
For organisations that want control over their network
The larger and more complex a network becomes, the harder it is to maintain oversight. Employees work from different locations, suppliers need temporary access, machines are added to production networks and ever more smart devices communicate via the enterprise network.
In such environments, macmon NAC provides the necessary transparency and control. The solution helps organisations centrally manage network access, limit risks and maintain a clear overview of all connected devices.
That is why macmon is deployed today in, among others:
Manufacturing companies
Logistics environments
Utilities and energy
Machine builders and OEMs
Critical infrastructure
Healthcare institutions
Governments and public organisations
Companies with multiple sites
5 challenges with problem and solution
Typical situations where macmon NAC makes the difference
From suppliers needing temporary access to unknown devices on the network: macmon helps organisations manage network access in a controlled, secure and transparent way.
Give suppliers secure access
The challenge
External technicians and maintenance partners regularly need access to machines, installations or systems.
Automatically block unknown devices
The challenge
An unknown laptop, camera or IoT device is connected to a free network port.
Segment production networks
The challenge
Machines, office workstations, cameras, visitors and suppliers often share the same infrastructure.
Support compliance and audits
The challenge
More and more organisations must be able to demonstrate who had access to the network and when.
Investigate incidents faster
The challenge
During an outage or security incident, it is often unclear which device was involved.
How macmon NAC helps
Visibility
Access control
Traceability
Risk management
Why deploy macmon with 4net?
As a Belgian IT and OT specialist, 4net supports organisations in implementing macmon NAC, Belden's Network Access Control solution. We combine product knowledge with practical experience in business and industrial networks.
Whether it is an initial analysis, a phased rollout or integration within existing infrastructure: we guide organisations through the full journey — from design and configuration to implementation and follow-up.
- Local Belgian partner
- Experience with IT and OT networks
- Technical knowledge of switches, VLANs and industrial networks
- Support with analysis, implementation and follow-up
- Bridge between vendor, IT team and installer
- Vendor-independent integration into existing network infrastructures
Are you sure you know who is on your network?
Unknown devices remain an underestimated risk. With macmon NAC you regain insight into what is connected — and control over who gets access to your network.
How do we get started?
Frequently asked questions
No, but it is especially relevant for organisations where network access, security, and continuity are important.
Yes, macmon is vendor-independent and can manage SNMP-manageable switches and routers.
Yes, Belden explicitly positions macmon NAC for IT and OT networks.
No, macmon can work in a hybrid way: from MAC address recognition to more advanced authentication with certificates and 802.1X, for example.
The team of German developers in Berlin is continuously working on expanding macmon and creating new capabilities.
New standards, research findings, and so on are continuously incorporated into the further development of the software as quickly as possible.
In addition, integrations with products from other vendors are constantly being implemented, ensuring powerful integration with the existing environment.
New standards, research findings, and so on are continuously incorporated into the further development of the software as quickly as possible.
In addition, integrations with products from other vendors are constantly being implemented, ensuring powerful integration with the existing environment.
Although we have modern switches, we do not have much expertise in managing them, as we have only used the standard functions so far.
No, that is not necessary. A few details do need to be configured. Both Macmon partners and the Macmon support department will gladly inform you about what is required and provide the necessary support.
No, that is not necessary. A few details do need to be configured. Both Macmon partners and the Macmon support department will gladly inform you about what is required and provide the necessary support.
Our requirements are minimal. It must be possible to manage the switches and routers using SNMP V1, V2c, or V3 (read and write) or via SSH/Telnet.