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IT best practices

How to Secure Business Wi-Fi

Office Wi-Fi is often set up once and never touched again. These are the settings that separate a secure business network from a home router in an office.

The short answer

To secure business Wi-Fi, use WPA3, or WPA2 with AES where older devices require it; give staff individual sign-ins through WPA2 or WPA3 Enterprise where possible; put guests and smart devices on separate networks that cannot reach business systems; change default admin passwords; turn off WPS; and keep access point and firewall firmware current. Managing access points centrally keeps settings consistent and shows who is connected.

Key takeaways

  • Separate staff, guest and device networks
  • Prefer WPA3, and individual sign-ins over one shared password
  • Change default admin credentials and turn off WPS
  • Keep firmware current and manage access points centrally

Separate your networks

The most important Wi-Fi control is segmentation. A visitor’s phone, a smart TV or a door camera should never share a network with the computers that hold client files.

  • Staff network: managed company devices with access to business systems
  • Guest network: internet only, isolated from everything else, with client isolation so guests cannot see each other
  • Device network: printers, cameras, TVs and other smart devices, limited to the services they need
  • Payment or clinical devices on their own segment where compliance calls for it

Encryption and sign-in

WPA3 is the current Wi-Fi security standard and resists the offline password-guessing attacks that weaken WPA2. Where older devices need it, a WPA2 and WPA3 transition mode keeps them connected while newer devices use WPA3.

A single shared password for all staff is the weak point in most small offices: it leaks, it ends up on sticky notes and former employees still know it. WPA2 or WPA3 Enterprise gives each person their own sign-in, often tied to their Microsoft 365 account, so removing someone’s access becomes part of offboarding.

Settings small offices miss

  • Default admin usernames and passwords left on access points and the router
  • WPS left on, which allows easy PIN attacks
  • Old WEP or TKIP settings kept for one legacy device
  • Firmware not updated since installation
  • Remote management open to the internet
  • Guest passwords that never change
  • Consumer routers used in place of business access points

Management and monitoring

Business-grade access points are managed from one console, which keeps settings consistent across every unit and site, rolls out firmware and shows which devices are connected. That visibility is what lets you spot an unknown device, a rogue access point or a network that has slowed to a crawl.

How we help

The managed network covers your firewall, switches, routers, access points and Wi-Fi, with network segmentation and remote access and VPN management, all administered remotely. We design guest and device networks so visitors and smart devices stay away from business systems, and we troubleshoot network problems with your internet providers when the cause is upstream.

How the managed network works

Sources

Information on this page is general and is not legal or compliance advice.

Frequently Asked Questions

Is WPA2 still safe for business Wi-Fi?

WPA2 with AES and a strong password is still widely used, but WPA3 is stronger and should be used wherever devices support it. Avoid WPA2 with TKIP and anything older.

Should guest Wi-Fi have a password?

Yes, or a sign-in page. More important than the password is that the guest network is isolated from business systems.

How often should the Wi-Fi password change?

Change a shared password when staff leave or it may have leaked. Moving staff to individual sign-ins with WPA2 or WPA3 Enterprise removes the problem.

Do smart devices need their own network?

Yes. Cameras, TVs and other smart devices often have weak security and slow updates, so they belong on a separate segment with only the access they need.

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