A firewall should be an actively managed control, not an appliance installed years ago and remembered only when the internet stops working.
Confirm ownership and access
Record the make, model, location, support status and the people or providers with administrative access. Confirm that credentials are controlled by the business and not shared informally.
- Named owner for policy and changes
- Supported hardware and software versions
- Protected administrator accounts
- Current configuration backup
Review rules and exposure
Every inbound rule should have a business reason, an owner and a review date. Old vendor access, temporary tests and broad rules are common sources of avoidable exposure.
Outbound controls matter too, especially for device networks and systems that should communicate with only a small set of services.
Separate different kinds of devices
Staff devices, guests, servers and operational equipment should not automatically share the same trust boundary. Segmentation limits unnecessary access and makes unusual activity easier to understand.
The design must still be practical: required services such as printing, voice and management need documented exceptions. Rentways does not provide printer services, but printers should still be considered as networked devices.
Test monitoring and recovery
Decide which alerts require action, who receives them and how changes are recorded. Noise that nobody reviews is not meaningful monitoring.
A restorable configuration backup and a replacement plan reduce recovery time if hardware fails or a change causes disruption.