Network.Security.Tools [Electronic resources] نسخه متنی

Chapter 10. Writing Network Sniffers

An
important function of many security tools is to capture network
traffic and then either reassemble it or extract information from the
network packets flowing across the network. Common examples of such
tools include password sniffers such as dsniff
(http://monkey.org/~dugsong/dsniff/) and
Ettercap (http://ettercap.sourceforge.net/), and
diagnostic, troubleshooting, and monitoring tools such as
ntop (http://www.ntop.org) and
Snort (http://www.snort.org).

This chapter provides a quick and practical introduction to packet
capture using the commonly available libpcap
library on wired and wireless networks, and is intended to accelerate
and simplify the process of creating a packet-capturing tool.