Many senior living and skilled nursing networks grew one device at a time. A new camera system here, a smart TV there, a few resident tablets, a new printer. Over time, everything ends up on one flat network where any device can talk to any other. That is convenient until a single infected laptop or a vulnerable camera becomes a doorway to your resident records.
Network segmentation is the practice of dividing a network into separate zones with rules about what can travel between them. It is one of the most effective structural improvements a care community can make.
Think of a building with fire doors. A fire in one wing is contained because doors close and limit the spread. A flat network is a building with no doors: trouble anywhere can reach everywhere. Segmentation adds the doors.
It limits how far ransomware or malware can spread from one infected device.
It keeps resident and guest traffic away from systems holding ePHI, supporting the HIPAA Security Rule requirement to restrict access.
It isolates devices that cannot be easily updated, such as older medical equipment, building controls and cameras.
It makes problems easier to troubleshoot, since each zone has a defined purpose.
It improves performance by keeping heavy traffic, like streaming, off clinical paths.
A practical design for most facilities includes some version of these:
Staff workstations, med carts, servers and printers that handle resident information.
Internet-only access, with no route to the internal zones.
Cameras, door access, HVAC controllers, smart TVs and similar devices.
Equipment such as monitors or lab devices that connect to the network, particularly those running older software.
Phones and communication systems that benefit from consistent performance.
A protected zone for switches, firewalls and access points, reachable only by administrators.
Technically, zones are created with virtual LANs, or VLANs, configured on switches, plus firewall rules that control traffic between them. The important part is the rules. A set of zones with no restrictions between them is not really segmented.
Start with a default stance: nothing crosses between zones unless there is a documented reason. Then add exceptions, such as allowing staff workstations to reach a specific printer or letting the camera server talk to the cameras.
Inventory your devices. Walk the building and list everything with a network connection, including the ones people forget.
Group devices by function and risk. Which ones hold ePHI? Which ones cannot be patched? Which ones are owned by residents or visitors?
Design the zones and the traffic rules between them on paper before changing anything.
Confirm that your switches and firewall can support it. Older unmanaged switches may need replacement.
Migrate one zone at a time, beginning with a low-risk area such as guest Wi-Fi.
Test after each change, with clinical staff involved for anything that touches care workflows.
Document the final design, the rules and the reasons for them.
Moving too fast and breaking a system, such as a nurse call integration that depends on unusual network paths
Leaving a convenient allow-all rule in place after testing
Forgetting vendor-managed equipment, which may require the vendor to cooperate on changes
Failing to record the design, so the next technician cannot understand it
Review firewall rules at least annually. Remove rules that are no longer needed, and check that new devices are placed in the right zone when installed. Add segmentation to your purchasing checklist so that new systems are planned into the design.
UnityCare IT designs and implements network segmentation for healthcare and senior living organizations, with careful planning around clinical workflows. If you want a plain-language map of your current network and a phased plan for improving it, we can start with an assessment.
Call or text: 405-285-3845
New customers: start@unitycareit.com
Existing customers: support@unitycareit.com
Address: UnityCare Technologies, 2524 N Broadway Ste 554, PMB 947974, Edmond, Oklahoma 73034-4172