Exercise TraceNG: Traceoute Next Generation
Posted on : 15-02-2008 | By : Elie Bursztein | In : Exercise
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The traceroute tool is one of the basic tool used for network troubleshooting. It has been available since network early days. Still because it is based on TTL header modification and ICMP message, it is not straightforward to understand and implement. The goal of this exercise is to re-implement and add additional techniques to this utility.
This will allow student to understand the notion of packet injection and packet sniffing. It also gives the opportunity to play with more subtle thing such as
network latency, packet filtering and Q.O.S because the main goal is to have a tool that will adapt its behavior according to router and packets filter behavior.
The exercice v0.2 (PDF)
Structure de protocol structure header (.h)
portable types for C code (.h)
A good book that details how the libnet and libpcap can be used is:
Building Open Source Network Security Tools: Components and Techniques
(The author of the book is also the author of the libnet)
