{"id":16011,"date":"2024-02-09T13:47:45","date_gmt":"2024-02-09T11:47:45","guid":{"rendered":"https:\/\/cosh.de\/why-you-should-think-about-network-microsegmentation-today\/"},"modified":"2025-11-19T11:29:42","modified_gmt":"2025-11-19T09:29:42","slug":"why-you-should-think-about-network-microsegmentation-today","status":"publish","type":"post","link":"https:\/\/cosh.de\/en\/why-you-should-think-about-network-microsegmentation-today\/","title":{"rendered":"Why you should think about network microsegmentation today"},"content":{"rendered":"

<\/div><\/div><\/span>

Why you should know today about <\/span>network microsegmentation<\/span> should think about<\/span><\/h2><\/span>
<\/div><\/div><\/div>
<\/div><\/div><\/span>

Good to <\/span>to know<\/span>: <\/span>Effective security through network <\/span>Microsegmentation<\/span> <\/span><\/h3><\/span>
<\/div><\/div><\/div><\/div><\/div>

What is network microsegmentation? <\/b><\/span><\/p>\n

Microsegmentation is a method of dividing a network into small, isolated areas (segments\/zones) in order to restrict access to certain resources. In the context of network security, microsegmentation means that data traffic between different parts of the network is strictly controlled by perimeter firewalls with active services such as IDS to prevent the spread of threats internally as well. <\/span><\/p>\n

Fine-tuning of communication from clients to the server:<\/span> <\/b><\/p>\n

Microsegmentation enables granular control over access to resources. You can define exactly which users or systems are allowed to access certain data or applications. <\/p>\n

Although many companies use firewalls to secure the transition to the Internet, they forget that devices are now being carried past them every day by the company's employees. (in the truest sense of the word). The technical communication connections to the servers are often in the same network. Even in large organizations, there is often no separation between the individual servers. <\/p>\n

Zone concept <\/span> <\/b><\/p>\n

Network architects plan communication tables that show which server application communicates with the user or with each other and how. In concrete terms, we are talking here about the minimum principle of communication. Each network zone that communicates with another network zone is routed through a firewall that examines the traffic (network traffic). <\/p>\n

For example, an application server only needs to communicate with an MS SQL database server on port 1433. The connection is also always established one-way from the application server to the database server. It is therefore not necessary from a network architecture point of view to allow further connections between these two servers. <\/p>\n

In this case, for example, two zones are created. Zone \"DB\" as the database server zone and \"APP\" as the application server zone. Now both VLANs in which the servers are located are separated by a perimeter firewall. Even at network level, this ensures that various attack scenarios outside of SQL-specific attacks are not possible between these two servers. <\/p>\n

Where do you start? <\/span> <\/b><\/p>\n

Every company now has many business applications, often even more than 100. If network administrators now think about having to configure the firewalls and VLANs, one or the other will feel sick. Templates are the way to success! <\/p>\n

Network architects must provide clear templates for their firewall admins so that they can use them as a guide. The approach of first configuring and then testing to find out whether it fits the way you want it is also not the right way. Misconfigurations are practically pre-programmed due to the sheer abundance of connections. <\/p>\n

Progressing step by step is the path to success here. The example described above is already an extreme expansion stage of micro-segmentation. You can also start by zoning the following networks: <\/p>\n