Hyunjung Lee's scientific contributions

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Publications (2)

HSViz-II: Octet Layered Hierarchy Simplified Visualizations for Distributed Firewall Policy Analysis
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  • Jan 2023
Enterprises typically install firewalls at communication points to their internal networks with the primary objective of protecting their core assets from external cyber attackers. This ensures unauthorized access is controlled and prevented. However, overly permissive policies and services with vulnerabilities can be exploited by attackers, provid...
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Figure 1. Firewall policies in text mode
Figure 9. Shadowing anomaly graph in Anomaly-view
Figure 12. Distributed-view: Distributed Firewall Policy Anomaly View
Figure 13. Redundancy anomaly graph in Anomaly-view
+16 Figure 14. Upstream and Downstream Firewall Concept [8]
HSViz: Hierarchy Simplified Visualizations for Firewall Policy Analysis
Article
Full-text available
  • May 2021
Most of the companies have firewalls in order to protect their internal networks and assets from the attacker of the cyber space. Firewall policies should be maintained and organized with high importance. However, considering the length of time needed in analyzing the highly complex policies and the risks of disabling firewall that may arise in cas...
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Citations

... Its visualization model allows to represent all ranges of source and destination IP addresses, thus enabling control on each application service, to identify active and inactive domains, and to detect possible anomalies. Lee et al. [33] propose HSViz, a firewall policy visualization tool that offers multiple view to analyses firewall policies. Among them, the most useful ones are the hierarchy view, which visualizes firewall policy ranges based on destination IP octets at the user's choice, and the anomaly and distributed views, which represent the policy in parallel coordinate charts, easing anomaly detection. ...
Reference: An Optimized Approach for Assisted Firewall Anomaly Resolution
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