TcpDump : 用来抓包的!
https://mozillazg.github.io/2015/05/open-tcpdump-result-with-wireshark-gui.html
https://danielmiessler.com/study/tcpdump/#source-destination
在我的Mac电脑上使用的时候,语句要加sudo 似乎,不然会permission denied。
所以:“sudo tcpdump -i any”
eth0 is a Linux-ism, and MacOS isn't Linux. You almost certainly want en0, en1, etc. "ifconfig -a" is your friend or, if you have it installed, "tshark -D".
PCAP是binary。
set up connection.
Telnet: 用来建立连接的
Wireshark
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