PCAPs - OT Network Security Analysis and Forensic
This guide explains how to utilize PCAPs (Packet Capture files) for OT (Operational Technology) network security analysis and forensic investigations using the Site Manager (Bundle 2 in 1).
Step-by-Step Instructions
1. Selecting the PCAPs Environment
When starting the Site Manager (Bundle 2 in 1) for the first time, select the option for "PCAPs Environment" during the initial configuration.
2. Adding the Site Manager to the Enterprise Manager
After completing the configuration, add the Site Manager to the Enterprise Manager.
3. Creating a New PCAP Environment
- Navigate to the Settings of the Site PCAPs Management → Components.
- Click on the Add New PCAP Environment button.
- Provide an appropriate name in the PCAP Environment Name field and click Save.
4. Importing PCAP Files
Return to the Settings of the Site PCAPs Management → Components.
Locate the newly created PCAP Environment, then click on the three dots (⋮) at the end of its name.
Select Enter PCAP Environment → complete setup of this
- Return to the Settings of the Site PCAPs Management → Components. Then click on the three dots (⋮) at the end of its name.
- Select Offline Environment (PCAPs) to begin importing PCAP files.
- Click on the Import PCAP file button and select the desired PCAP file from your system.
- After the import process is complete, enter the PCAPs Environment for further analysis.
Overview of OT Network Forensics
Operational Technology (OT) network forensics is the process of collecting, analyzing, and reporting data from a computer network to investigate suspicious activities or incidents. This practice involves:
- Capturing and Preserving Data: Ensuring that network traffic and related data are captured and stored in a secure and tamper-proof manner.
- Analyzing Network Traffic: Using tools to decode and scrutinize the data to identify anomalies or malicious activities.
- Understanding Cyber Incidents: Determining the root cause, timeline, and potential impact of cyberattacks or breaches.
Network forensics serves critical purposes such as:
- Detecting and mitigating security breaches.
- Identifying causes of network performance issues.
- Gathering legal evidence for cybercrime investigations.
Importance in Cybersecurity
Network forensics is a vital component of a comprehensive cybersecurity strategy. It empowers professionals to:
- Enhance situational awareness of their OT environments.
- Respond effectively to incidents.
- Strengthen preventive measures against future threats.
By following the steps outlined above, organizations can leverage PCAP analysis to protect their OT networks and ensure robust cybersecurity.