Network administrators look at all of these designs, as well as the issue of network segment engineering, to determine the best solutions for a given network. By: Justin Stoltzfus Contributor, Reviewer. By: Satish Balakrishnan. Dictionary Dictionary Term of the Day. High-Performance Cloud Computing. Techopedia Terms. Connect with us. Sign up.
Term of the Day. Best of Techopedia weekly. News and Special Offers occasional. In complex environments that have existed for years, implementing network segmentation best practices may be impossible without disrupting business operations.
To address these issues, IT leaders are turning to new approaches like microsegmentation and software-defined networking SDN. These approaches decouple the enforcement of segmentation policies from the physical network infrastructure, allowing more granular control and easier administration.
In this model, users and devices are considered untrustworthy by default, even if they are already inside the corporate network. The Varonis Data Protection platform can help you identify the parts of your network where important data is being stored so you can build an effective segmentation strategy. Want to learn more? Schedule a demo today! Robert is an IT and cyber security consultant based in Southern California. He enjoys learning about the latest threats to computer security. Choose a Session X.
What Is Network Segmentation? A VLAN is a logical construct that separates traffic at the switch level. Subnets , on the other hand, operate at the IP address and router level. The two are frequently used together in a one-to-one fashion. Who Needs Network Segmentation? Healthcare providers : Healthcare organizations must take care to safeguard sensitive patient data, and so may choose to carve out high-security slices of their network to store medical records.
How you decide to segment your network is called a segmentation policy. Imagine a large bank with several branch offices. The bank's security policy restricts branch employees from accessing its financial reporting system. Network segmentation can enforce the security policy by preventing all branch traffic from reaching the financial system.
And by reducing overall network traffic, the financial system will work better for the financial analysts who use it. However, these approaches are costly and difficult. Today, software-defined access technology simplifies segmentation by grouping and tagging network traffic.
It then uses traffic tags to enforce segmentation policy directly on the network equipment, yet without the complexity of traditional approaches. Microsegmentation uses much more information in segmentation policies like application-layer information.
It enables policies that are more granular and flexible to meet the highly-specific needs of an organization or business application. Segmentation reduces network congestion. For example, a hospital's medical devices can be segmented from its visitor network so that medical devices are unaffected by web browsing.
Segmentation improves cybersecurity by limiting how far an attack can spread. For example, segmentation keeps a malware outbreak in one section from affecting systems in another. Segmentation can stop harmful traffic from reaching devices that are unable to protect themselves from attack.
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