This is my new attempt to document, my "technique". Consecutive subnetting can be a clever way to organize and secure a network by creating smaller, segmented sub-networks within a larger one. This approach works well as a “barricade” to control traffic flow and isolate different segments.

In a nutshell, it looks like this:

Identify the main network block: Start with a large IP address block that you need to segment.

Divide into subnets: Break down the large network block into smaller, consecutive subnet blocks. Each subnet will have its own range of IP addresses.

Assign subnets: Allocate the smaller subnet blocks to different segments of your network based on function, location, or security requirements.

Configure routing: Set up routing rules and access controls to manage the traffic flow between these subnets. This allows you to regulate which subnets can communicate and which are isolated.

Implement firewalls: Use firewalls to create additional layers of security at the borders of each subnet. This helps to prevent unauthorized access and potential threats from spreading across the network.

Monitor and maintain: Continuously monitor the subnets for any unusual activity and keep your firewall rules and routing configurations up to date.

By doing so, you effectively create virtual barricades within your network, which can help enhance security and improve network performance.