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tcpreplay 输出到 STDOUT？

tag-icon • tag-icon openbsd tcpdump
tcpreplay 输出到 STDOUT？ 
$ tcpreplay tcpdump-2015-01-02-18h-13m.pcap        
ERROR:  The intf1 option is required
tcpreplay (tcpreplay) - Replay network traffic stored in pcap files
USAGE:  tcpreplay [ -<flag> [<val>] | --<name>[{=| }<val>] ]... <pcap_file(s)>

   -q, --quiet                Quiet mode
   -T, --timer=str            Select packet timing mode: select, ioport, rdtsc, gtod, nano, abstime
       --sleep-accel=num      Reduce the amount of time to sleep by specified usec
       --rdtsc-clicks=num     Specify the RDTSC clicks/usec
   -v, --verbose              Print decoded packets via tcpdump to STDOUT
   -A, --decode=str           Arguments passed to tcpdump decoder
   -K, --enable-file-cache    Enable caching of packets to internal memory
       --preload-pcap         Preloads packets into RAM before sending
   -c, --cachefile=str        Split traffic via a tcpprep cache file
   -i, --intf1=str            Server/primary traffic output interface
   -I, --intf2=str            Client/secondary traffic output interface
       --listnics             List available network interfaces and exit$ 
$ pkg_info | grep tcpreplay
tcpreplay-3.4.4p1   resend network traffic saved by tcpdump
$ uname -a
OpenBSD notebook.lan 5.6 GENERIC.MP#333 amd64
$

由于wireshark太耗资源，我需要在tcpreplay中查看数据包，就像在wireshark中一样。问：我怎样才能做到这一点？

答案1

tcpreplay是错误的工具。它的工作是生成数据包并将其发送到网络，而不是将其内容显示到标准输出。

如果 Wireshark（包括其命令行实用程序tshark）被认为对您来说太耗资源，那么可能唯一的其他选择是tcpdump.请注意，它的数据包解码功能不如 Wireshark 丰富，但是……这些额外的功能使 Wireshark 变得更重。

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