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On my machine there a TCP server is running @port 54000 which is a echo server it sends the same message which is sent to it.

I have multiple clients which is connected to this server. Clients and the server are running in the same machine (not inside of Virtual Machine).

I have specified tcp.port==54000 as the display filter to capture the packets going through the port 54000 but Wireshark is not display any packets.

In order to monitor the packets I selected Wi-Fi form the wireshark.

Server and client are running & they are communicating with each other but why the packets are not displayed by in Wireshark and How can I fix it ?

Thanks in Advance Guys!

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  • Are your clients perhaps running on the same machine? To which IP address, exactly, are they connecting?
    – Daniel B
    Commented Sep 28, 2021 at 9:51
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    Are you sure you're tracing the correct adapter?
    – Peregrino69
    Commented Sep 28, 2021 at 10:47
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    In that case, are you very sure you're tracing the correct adapter? "Same machine" communications do not go through the physical Ethernet or Wi-Fi interface -- regardless of what IP address they use. Recent Wireshark+Npcap (not legacy Winpcap) should show a special "loopback" adapter.
    – grawity_u1686
    Commented Sep 28, 2021 at 11:35
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    Could you please clarify "same machine"? Are either the clients or the server running as Virtual Machines?
    – Peregrino69
    Commented Sep 28, 2021 at 11:43
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    @DevParzival Please don't answer in comments. Add the new info directly to the question so it's available and community members don't have to dig details up from comments.
    – Peregrino69
    Commented Sep 28, 2021 at 11:44

1 Answer 1

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These server and client, both running locally on your PC

If you did your work on Linux, Unix, *BSD, please capture on the loopback interface (lo, lo0, etc.).

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