嗅探并显示UTF-8中的TCP数据包 [英] Sniffing and displaying TCP packets in UTF-8

问题描述

我正在尝试使用tcpdump显示在我的网络上流动的tcp数据包的内容. 我有类似的东西:

I am trying to use tcpdump to display the content of tcp packets flowing on my network. I have something like:

tcpdump -i wlan0 -l -A

-A选项将内容显示为ASCII文本，但我的文本似乎是UTF-8.有没有一种方法可以使用tcpdump正确显示UTF-8?您知道其他任何有帮助的工具吗?

The -A option displays the content as ASCII text, but my text seems to be UTF-8. Is there a way to display UTF-8 properly using tcpdump? Do you know any other tools which could help?

非常感谢

推荐答案

请确保您的终端支持输出UTF-8，并将输出通过管道传递到替换不可打印字符的地方:

Make sure your terminal supports outputting UTF-8 and pipe the output to something which replaces non printable characters:

tcpdump -lnpi lo tcp port 80 -s 16000 -w - | tr -t '[^[:print:]]' ''
tcpdump -lnpi lo tcp port 80 -s 16000 -w - | strings -e S -n 1

如果您的终端不支持UTF-8，则必须将输出转换为支持的编码.例如:

If your terminal does not support UTF-8 you have to convert the output to a supported encoding . E.g.:

tcpdump -lnpi lo tcp port 80 -s 16000 -w - | tr -t '[^[:print:]]' '' | iconv -c -f utf-8 -t cp1251

-c选项告诉iconv忽略目标编码中没有有效表示的字符.

-c option tells iconv to omit character which does not have valid representation in the target encoding.

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