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Tcpdump

1、Basic Commands​

1.1、Capture network packets from a specified host​

tcpdump -i eth0  host 127.0.0.1  -w ./package.cap

1.2、Capture network packets on a specified port​

tcpdump -i lo port 8090  -w ./package.cap

1.3、Capture UDP network packets with a specified target host​

 tcpdump -i eth0  udp dst host 127.0.0.1   -w ./package.cap