 ® 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.  Figure 1 highlights one of the industry practices for network topology for IBM® BigInsights® clusters. IBM BigInsights cluster network deployment architecture Figure 1. High-level IBM BigInsights network architecture Users can access management nodes from the corporate network only after they authenticate with the  1 IBM BigInsights Security Implementation: Part 2 Securing the IBM BigInsights Cluster Perimeter