"In my last column I showed you how to configure a Linux-based
monitoring system with dual network interface cards. In this
column I'll show you how to install and configure IPtraf, a traffic
analysis utility, and how to use GNUplot, an open source plotting
package, to graph the data you've gathered."
"IPtraf is a console-based network monitoring utility for Linux
(the latest version, 2.3.1, is available for download). Written by
Gerard Paul Riker, IPtraf tops my list of easy-to use-network
analysis tools. IPtraf is distributed in a compressed tar format,
and the full source code is included. ...a ready-to-run executable
file is included in the distribution..."
"Before you begin capturing traffic, you need to configure
IPtraf. up Launch the application and select the "configuration"
menu item. We're interested in three settings: TCP/UDP service
names, logging, and logging interval. Enable service names and
logging, and set the logging interval to 5 minutes."
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