This is our old Q&A Site. Please post any new questions and answers at

I have an application that listens on port 6001. An interface will send something to the port and my software should acknowledge it via application layer protocol, but doesn't. It works in my test environment, but doesn't work at my client site. In wireshark at the client side, I see the tcp handshake but no data traffic. In the test environment, I see the tcp handshake but no data traffic. Any ideas?

I know Windows comes with a built-in tool called netsh. With netsh, you can capture traffic. I'm going to see if I see data packets in netsh using the following command while I wait for a response: “Netsh trace start scenario=NetConnection capture=yes report=yes persistent=no maxsize=1024 correlation=yes traceFile=C:\Logs\NetTrace.etl”

asked 12 Aug '15, 17:09

alan1337's gravatar image

accept rate: 0%

converted to question 12 Aug '15, 20:09

Guy%20Harris's gravatar image

Guy Harris ♦♦

This sounds exactly like the question to which your question was originally posted as a comment (this is a Q&A site, not a forum; each question should be asked separately, so users can search for it before asking questions themselves).

As per the answer to that question, "Sounds like TCP Chimney to me..." If TCP Chimney is on for the interface on which you're capturing, try turning it off.

permanent link

answered 12 Aug '15, 20:13

Guy%20Harris's gravatar image

Guy Harris ♦♦
accept rate: 19%

Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here



Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text]( "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:


question asked: 12 Aug '15, 17:09

question was seen: 2,636 times

last updated: 12 Aug '15, 20:13

p​o​w​e​r​e​d by O​S​Q​A