How Microsegmentation effects a Major Impact On Your Network Security

There are several approaches to increasing security inside a data center. The first approach is to simply add traditional security measures internally, that is, add firewalls to local network segments to protect the most critical applications. This has several limitations. It can be prohibitively costly to deploy a large number of physical firewalls and challenging to manually provision policies. The protection offered is limited, lacking the ability to protect other applications if malware penetrates one device, and inflexible. The rules are defined in terms of IP address and ports, so if applications and data move to other devices and network segments, the protection doesn’t travel with them.

You can also use virtual firewall, which use software to implement the firewall. Because licenses are needed, the costs can add up. They also require the same high level of manual configuration and support as do physical firewalls, which also adds to the costs.

Microsegmentation provides a more flexible means of implementing protection inside the data center that provides truly fine-grained security cost effectively. Network security is implemented through software-defined policies tied to applications and workloads rather than IP addresses and network segments. There’s less manual work involved and the policies can migrate along with applications, making them responsive to change. The policies help contain threats after a breach by limiting movement of data through the network. Making the policies effective, then, requires having a good understanding of how applications communicate and the necessary traffic flow. Policies should be written from the inside out, by defining which traffic is allowed, rather than specifying which traffic is not allowed.

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