Network Segmentation: The Simple Layer Most SMBs Skip (and Hackers Love)

 

Here's something most small business owners don't know — and hackers are counting on that.

Your guest Wi-Fi. Your office computers. Your accounting software. Your POS system.

If they're all sitting on the same network, a single compromised device can reach everything else. One wrong click on a phishing email — maybe from a contractor using your guest Wi-Fi — and someone's now walking through your entire network like they own the place.

This is called a flat network, and it's the default setup at the majority of small and mid-sized businesses we walk into.

The fix? Network segmentation. It's not as complicated as it sounds.  

You're essentially dividing your network into zones — like rooms in a building with locked doors between them. Guest Wi-Fi stays in the lobby. Your financial systems sit behind a door guests can't open. A compromised device in zone 1 can't see anything in zone 3.

For most SMBs, a good starting point looks like this:

— Guest/visitor Wi-Fi on its own isolated segment

— Employee devices on a separate network

— Servers, financial systems, and backups on a restricted segment

— IoT devices (cameras, smart TVs, printers) isolated entirely

Does setting this up require some planning? Yes. Is it worth doing before something goes wrong? Absolutely.

If you're not sure what your network looks like right now, that's the first conversation to have. A quick assessment usually tells you everything.

https://centurygroup.net/managed-it-solutions/server-network/

What security questions come up most often in your business? 

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