What your ISP router is designed to do
The gateway that Comcast Business, Verizon Fios or another provider installs combines a modem, a router and often Wi-Fi in one box. Its job is to bring the internet connection in and share it with a few devices. It does that well enough for a home.
In a business it ends up being the only thing between every computer, phone, printer and camera in the office and the internet, and it was never designed for that role.
What a business firewall adds
A next-generation firewall inspects traffic instead of just passing it along. It can block known malicious sites and attack patterns, stop devices from reaching places they never should, and keep a record of what happened.
- Network segmentation: guest Wi-Fi, staff computers, VoIP phones, cameras and smart-building devices each on their own network, so a compromised device can’t reach everything else.
- Intrusion prevention and threat blocking on traffic going in and out.
- Web content filtering by category, applied to groups instead of the whole office.
- Secure remote access with VPN and multi-factor authentication, instead of opening ports.
- Logs and alerts that show what happened when something looks wrong.
Why it matters for insurance and compliance
Cyber insurers increasingly ask about network segmentation, multi-factor authentication on remote access and endpoint protection before they issue or renew a policy. A provider’s router alone makes those questions hard to answer. A properly configured firewall, together with EDR on every computer, gives you the controls and the documentation insurers ask for.
How the two work together
You usually keep the provider’s equipment, because it carries the internet connection. We set it to pass the connection straight through (bridge mode or a static IP hand-off, depending on the provider) and put the business firewall behind it. Your internet service stays the same; the security, Wi-Fi and network design move to equipment you control.
We deploy and configure firewalls from Cisco Meraki, Fortinet and Ubiquiti UniFi, chosen to fit the size of the office, how many sites you have and how you want it managed.