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Chapter 2. Monitoring and benchmark tools
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4285ch02.fm
Figure 2-2 iptraf output of TCP/IP statistics by protocol
Figure 2-3 iptraf output of TCP/IP traffic statistics by packet size
2.3.13 tcpdump / ethereal
The tcpdump and ethereal are used to capture and analyze network traffic. Both tool uses the
libpcap library to capture packets. They monitor all the traffic on a network adapter with
promiscuous mode and capture all the frames the adapter has received. To capture all the
packets, these commands should be executed with super user privilege to make the interface
promiscuous mode.
libpcap library to capture packets. They monitor all the traffic on a network adapter with
promiscuous mode and capture all the frames the adapter has received. To capture all the
packets, these commands should be executed with super user privilege to make the interface
promiscuous mode.