Boundary vs Network Polygraph: What are the differences?

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1. Data Collection Scope: Boundary Polygraph captures data at the network edge, focusing on traffic entering or leaving the network, while Network Polygraph monitors data flowing within the network, including east-west traffic between devices.
   
2. Granularity of Monitoring: Boundary Polygraph provides a high-level overview of traffic patterns and potential threats at the network boundary, whereas Network Polygraph offers detailed insight into internal network traffic, allowing for in-depth analysis of communication between devices.
   
3. Impact on Performance: Boundary Polygraph typically has a lower impact on network performance as it mainly analyzes traffic at the perimeter, while Network Polygraph can impact network performance more significantly due to the detailed monitoring of internal traffic flows.
   
4. Security Focus: Boundary Polygraph is more focused on external threats and perimeter defense, making it suitable for organizations with a strong emphasis on protecting against external attacks, whereas Network Polygraph is geared towards identifying lateral movement and insider threats within the network.
   
5. Resource Requirements: Boundary Polygraph may have lower resource requirements compared to Network Polygraph, as it deals with a subset of overall network traffic and may not need as much processing power or storage capacity for data analysis.
   
6. Integration with Security Tools: Boundary Polygraph is commonly integrated with perimeter security tools like firewalls and intrusion detection systems, while Network Polygraph may be integrated with network monitoring solutions and security information and event management (SIEM) platforms for comprehensive visibility and analysis.

In Summary, Boundary Polygraph focuses on traffic at the network edge for perimeter defense, while Network Polygraph delves deeper into internal network traffic for threat detection within the network.