http://staff.washington.edu/dittrich/talks/core02/tools/tcpdump-filters.txt
http://www.alexonlinux.com/tcpdump-for-dummies
http://yangpenglee.blog.163.com/blog/static/1657992362010513115035497/
http://cizixs.com/2015/03/12/tcpdump-introduction
https://blog.csdn.net/u014066037/article/details/54378092
sudo tcpdump -n -s 0 -i eth0 -X -w mycapture.trc -vvv 'port 18010 and host 182.118.34.110'
-s: 如果打印所有数据太多，可以限定一下，比如-s 200
sudo tcpdump -nXr mycapture.trc | vi -