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Harnessing Topological Mapping for Secure Network Management

Explore the significance of using topological mapping to manage and secure large networks. Learn how visualizing network structures can enhance security and operational efficiency, with practical insights into ISP network management. Uncover the role of mapping in identifying anomalies and streamlining network infrastructure.

thomaspotts
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Harnessing Topological Mapping for Secure Network Management

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  1. Using Topological Mapping to Manage & Secure Large NetworksNANOG23: October 23, 2001karl@lumeta.com

  2. Lumeta: What we do • Connect to a client network, send and receive lots of packets, and deliver maps and data • It all started with mapping the Internet...

  3. The Internet

  4. Why is this Important? • Images convey more information in less “real estate.” • Maps call attention to anomalies more clearly. • You can’t secure what you can’t manage. You can’t manage what you can’t define.

  5. A Typical Intranet

  6. Specifics for ISPs • Order Matters: For an ISP, the network is their business • The business portions of ISP networks are highly organized and methodically laid out • Yet, there are still organic components, e.g., the corporate intranet

  7. What an ISP Looks Like

  8. What can be Found? • Undocumented infrastructure or incomplete mergers • Legacy connections to forgotten business partners or spun off business units • Mismanaged firewalls and routers

  9. Routing Table Errors

  10. Incomplete Divestitures

  11. Another Look at the ISP

  12. Conclusion • Network maps condense complex structural information into a manageable form • Topological features can readily point out anomalies • Assertion: Any large network can be improved by being mapped

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