network isolation

A big misperception is that if you implement different VLANs in different CIDR blocks/network numbering, you’ve achieved network segmentation. This couldn’t be further from the truth. To achieve actual segmentation, the hosts in one VLAN should not be able to reach every port of every asset in the other VLANs. In true network segmentation, you would set the default gateway of the VLAN on the switch to the firewall where the traffic can be further scrutinized based on specific ports, protocols walmartone, and traffic direction. As an alternative, but less scalable, is using VACLs (VLAN Access Control Lists) but solution can quickly become unmanageable, especially in large-scale enterprise deployments. These are however, quite suitable for smaller networks that have 1 or 2 core switches.

A big misperception is that if you implement different VLANs in different CIDR blocks/network numbering, you’ve achieved network segmentation. This couldn’t be further from the truth. To achieve actual segmentation, the hosts in one VLAN should not be able to reach every port of every asset in the other VLANs. In true network segmentation, you would set the default gateway of the VLAN on the switch to the firewall where the traffic can be further scrutinized based on specific ports, protocols walmartone, and traffic direction. As an alternative, but less scalable, is using VACLs (VLAN Access Control Lists) but solution can quickly become unmanageable, especially in large-scale enterprise deployments. These are however, quite suitable for smaller networks that have 1 or 2 core switches.