Learn why packet level detail and full packet capture are critical to the forensic capabilities of a security analyst.
Listed below are the top 7 reasons why packets are superior to logs alone.
1. Root cause analysis
Logs usually provide insight into how devices responded, but full packet capture tells the story of what happened. Packet data eliminates ambiguity and provides context that isn’t available in any other alerting or monitoring medium.
2. Higher-resolution alerting
Packet capture offers insight into the life cycle of a session, what it contained, and how it evolved. This insight is highly valuable for alerting and provides threat analysts with more tools to detect malicious activity faster and with greater accuracy.
3. Protocol details
Packets provide hundreds of additional data points that can be queried, analyzed, and correlated that aren’t available in logs alone. A deeper inspection of protocols gives both security analysts and system engineers better awareness of their environment.
With access to raw data, an analyst does not need to rely on what an IDS/IPS/firewall vendor thinks is essential in a session. While useful and often relevant, vendor severity thresholding may not keep pace as quickly as needed with the evolving threat landscape.
5. Forensic replay and reconstruction
The ability to replay a session and extract files or other artifacts enriches and advances threat intelligence and investigations. It can eliminate doubt around the contents of a flagged event and give analysts more actionable data and intelligence on what’s moving over the wire.
6. Device policy vetting and enhancement
Comparing packet data to IDS/IPS/firewall responses can aid in network hardening by identifying misconfigurations and device rules that are inadequate in stopping the malicious activity. Packet data improves security posture and helps get the most out of existing security infrastructure.
7. Reduced false positives
Logs don’t contain the wealth of data seen in packets. There are fewer avenues of white-listing available in logs, whereas packets may have dozens of headers, payload specifics, and enrichments refine and streamline noisy alerts. Packet data reduces analyst – and customer – workload, enhancing the entire solution.
If your organization is looking to switch from logs to a full packet capture system, Datshield would be happy to help you plan, implement and grow your security platform. Contact us today.