Network Segmentation: Why Users, Cameras, and Servers Should Not Float Together
How VLAN segmentation limits the consequences of an incident and why it is the first sensible security measure for most companies.
In many companies, everyone hangs on the same network: employee computers, guest Wi-Fi, IP cameras, printers, IoT devices, and servers. As long as no one exploits a weak camera, it seems to work. When they do, the damage is unnecessarily high.
Benefits of Segmentation
- Limits the consequences of an infection or compromised device
- Separates guests from business systems
- Enables different rules for different segments
- Simplifies troubleshooting
Sensible VLANs for a Small Business
- Users (workstations, laptops)
- Servers and business systems
- Printers and scanners
- IoT / cameras
- Guest Wi-Fi (completely isolated)
Practical Pitfalls
- 'Any-any' rules between VLANs mean that segmentation does not exist
- Printers often only need access from the user VLAN
- Backup must reach the servers — not the other way around
- DNS and NTP must work in all segments
Sorodne objave
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