Table of Contents for
Packet Analysis with Wireshark

Version ebook / Retour

Cover image for bash Cookbook, 2nd Edition Packet Analysis with Wireshark by Anish Nath Published by Packt Publishing, 2015
  1. Cover
  2. Table of Contents
  3. Packet Analysis with Wireshark
  4. Packet Analysis with Wireshark
  5. Credits
  6. About the Author
  7. About the Reviewers
  8. www.PacktPub.com
  9. Preface
  10. What you need for this book
  11. Who this book is for
  12. Conventions
  13. Reader feedback
  14. Customer support
  15. 1. Packet Analyzers
  16. Introducing Wireshark
  17. Other packet analyzer tools
  18. Summary
  19. 2. Capturing Packets
  20. Troubleshooting
  21. Wireshark user interface
  22. Wireshark features
  23. Tcpdump and snoop
  24. References
  25. Summary
  26. 3. Analyzing the TCP Network
  27. TCP connection establishment and clearing
  28. TCP data communication
  29. TCP close sequence
  30. Lab exercise
  31. TCP troubleshooting
  32. TCP latency issues
  33. Wireshark TCP sequence analysis
  34. References
  35. Summary
  36. 4. Analyzing SSL/TLS
  37. The SSL/TLS handshake
  38. Key exchange
  39. Decrypting SSL/TLS
  40. Debugging issues
  41. Summary
  42. 5. Analyzing Application Layer Protocols
  43. BOOTP/DHCP
  44. DNS
  45. HTTP
  46. References
  47. Summary
  48. 6. WLAN Capturing
  49. Analyzing the Wi-Fi networks
  50. Wi-Fi sniffing products
  51. Summary
  52. 7. Security Analysis
  53. The DOS attack
  54. Scanning
  55. ARP duplicate IP detection
  56. DrDoS
  57. BitTorrent
  58. Wireshark protocol hierarchy
  59. Summary
  60. Index

ARP duplicate IP detection

Wireshark detects duplicate IPs in the ARP protocol. Use the arp.duplicate-address-frame Wireshark filter to display only duplicate IP information frames.

For example, open the ARP_Duplicate_IP.pcap file and apply the arp.duplicate-address-frame filter, as shown in the screenshot:

ARP duplicate IP detection

Wireshark is providing the following information in this case:

  • Usually duplicate IP addresses are resolved by the DHCP server. It has to be taken seriously when it starts showing for every IP address in this case.
  • All IPs have the same Sender MAC address: fa:16:3e:bf:22:d0 and shows as a duplicate of that IP address.
  • This could be ARP poisoning—a Man in Middle attack happening in the background.