Additional Network Segmentation Measures
Question
During a security assessment, an organization is advised of inadequate control over network segmentation.
The assessor explains that the organization's reliance on VLANs to segment traffic is insufficient to provide segmentation based on regulatory standards.
Which of the following should the organization consider implementing along with VLANs to provide a greater level of segmentation?
Answers
Explanations
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The organization has been advised that its current use of VLANs for network segmentation is not sufficient to meet regulatory standards. VLANs are used to separate broadcast domains on a network, but they are not effective at providing true segmentation. True segmentation is essential for regulatory compliance, as it isolates network resources to prevent unauthorized access and data breaches.
To provide a greater level of segmentation, the organization should consider implementing network virtualization in addition to VLANs. Network virtualization allows for the creation of multiple virtual networks on a single physical network infrastructure. Each virtual network can have its own security policies and configuration, enabling a higher degree of isolation and control over network resources.
Access control lists (ACLs) are also a useful tool for providing segmentation, as they allow administrators to control which users and devices have access to network resources. ACLs are applied to routers and switches to control traffic flow between different segments of the network.
The spanning tree protocol (STP) is a protocol used to prevent loops in a network. It is not directly related to network segmentation and would not be effective in providing additional segmentation.
Air gaps are physical measures used to isolate network segments from each other. This approach involves physically separating the network components and using external media to transfer data between them. While effective, air gaps can be expensive and may not be practical in all situations.
Elastic load balancing (ELB) is a method of distributing traffic across multiple servers to improve performance and availability. It is not related to network segmentation and would not provide any additional segmentation benefits.
In summary, the organization should consider implementing network virtualization and access control lists to provide a greater level of segmentation in addition to its current use of VLANs.
