Willow A4.1

Do you have firewalls at the boundaries between your organisation's internal networks, laptops, desktops, servers, and the internet?

Section A4: Firewalls  ·  Cyber Essentials Willow

What this question is really asking

Confirm that firewalls exist at every boundary between your internal networks and the internet. This includes your physical office perimeter, each home worker's connection point (usually their home router), and cloud service boundaries where applicable. A software firewall on a device does not substitute for a boundary firewall.

What satisfies this requirement

Yes or No

Firewalls must be in place between office network and the internet. CE Requirement: protect every device in scope with a correctly configured firewall.

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What to prepare before your assessor visit

The most common failure here involves home worker boundary firewalls. ISP-provided home routers generally qualify as boundary firewalls for CE purposes — provided the built-in firewall is enabled, the admin password has been changed from the default, and any unnecessary services are reviewed. The pitfall is organisations who simply haven't thought about home workers' routers at all. You need a consistent story for how every home worker's boundary is addressed.

How this question sits across CE versions

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Do you have firewalls at the boundaries between your organisation's internal networks, laptops, desktops, servers, and the internet?
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Do you have firewalls at the boundaries between your organisation's internal networks, laptops, desktops, servers, and the internet?
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Do you have firewalls at the boundaries between your organisation's internal networks, laptops, desktops, servers, and the internet?

Related policy templates

Getting certified means having documentation to back it up. These policy templates cover the controls this question tests.

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