Networking / Beginners

Exploited Anonymity

Inconsistencies based on numerical naming, dotted names, and variable formats cause problems for hostname lookup systems. A defender, wanting to keep systems hidden, may consider using hostnames that cannot be resolved by common network analysis tools. Only tools that can handle these naming conflicts can resolve the defender's hostnames and perform lookups.

Missing Lookups

Not all hostnames contain network address mappings. Similarly, not all hostnames with network addresses contain reverse lookup information. For example, a domain name may be associated with mail exchange (MX) and text (TXT) records but not be associated with a network address. A Web server that hosts many domains may only have a reverse lookup for the primary name and not for all of its aliases.

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In this tutorial:

  1. Domain Name System (DNS)
  2. DNS Common Uses
  3. Hostname-to-Address Mapping
  4. Common Lookup Tools
  5. Naming Confusion Attack Vectors
  6. Dotted Names
  7. Name Formatting
  8. Exploited Anonymity
  9. Mail Servers
  10. Sender Policy Framework Overloading
  11. Domain Keys Overloading
  12. DNS Protocol
  13. Packet Information
  14. Simple DNS Server
  15. Distributed Architecture
  16. Top Level Domain Servers
  17. Generic Top Level Domain (gTLD)
  18. Secondary Level Domain (SLD)
  19. Primary and Secondary Servers
  20. Caching Servers
  21. DNS Management
  22. DNS Direct Risks
  23. DNS Performance versus Security
  24. DNS Cache Poisoning
  25. Corrupt DNS Packets
  26. DNS Domain Hijacking
  27. DNS Server Hijacking
  28. Dynamic DNS
  29. Similar Hostnames
  30. Domain Renewals
  31. Hostnames
  32. Zone Transfers
  33. Host Listing
  34. DNS Fields
  35. Mitgation Option
  36. Technical Threat Mitigation
  37. Social Threat Mitigation
  38. Defining Trusted Replies