Monitoring Network Traffic with Dsniff – This is a practical step by step guide showing how to use Dsniff, MRTG, IP Flow Meter, Tcpdump, NTOP, and Ngrep, and others. It also provides a discussion of how and why we should monitor network traffic. Updated version, sgml format.
You can download it from the following link: https://packetstormsecurity.com/files/download/25911/monitoring-Mar-25-2002.tar.gz
Source: https://packetstormsecurity.com/files/25911/monitoring-Mar-25-2002.tar.gz.html