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# IBM BigInsights Security Implementation: Part 2 Securing the IBM BigInsights Cluster Perimeter 

Big data analytics is network intensive because it runs on a cluster of nodes. Due to the high volumes of data exchanged between nodes in the IBM® BigInsights® cluster, network isolation is vital for the following reasons: 

To prevent sniffing attacks  

To reduce the network congestion so that the corporate network is not affected by the big data cluster  traffic 

Isolating the cluster network also gives administrators greater flexibility in enforcing the cluster access. 

This IBM® Redbooks® Analytics Support web doc serves as a guide for system implementers who are creating a secure zone for an IBM BigInsights cluster by providing an example of current industry practices. This document applies to IBM BigInsights Version 4.2 and later. 

## IBM BigInsights cluster network deployment architecture 

Figure 1 highlights one of the industry practices for network topology for IBM® BigInsights® clusters. 

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Users can access management nodes from the corporate network only after they authenticate with the 

