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Why cannot see tcp protocol when packet sniffing?

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I am trying to siniff the pakets by uploading a text file to http://gaia.cs.umass.edu/wireshark-labs/TCP-wireshark-file1.html. But when I start and upload that file, I can only see NBNS protocol(and 3 packets are sent).Why cannot see the tcp protocol?I have already chosen the interfaces at the beginning and I am using wireless Internet.I also have made some Google search but couldn't find any useful thing.Thanks for any reply.

asked 19 Apr '13, 14:25

ntf's gravatar image

ntf
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edited 19 Apr '13, 21:52

joke's gravatar image

joke
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One Answer:

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Could it be the TCP Chimney as mentioned in http://wiki.wireshark.org/CaptureSetup/Offloading ?

TCP Chimney Chimney offloading lets the NIC handle processing for established TCP connections. On Windows offloaded connections bypass WinPcap, which means that you won't capture TCP conversations.

answered 22 Apr '13, 02:25

mrEEde2's gravatar image

mrEEde2
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