Wireshark-users: [Wireshark-users] Question about Wireshark and the Windows Firewall

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From: David Aldrich <David.Aldrich@xxxxxxxxxxxx>
Date: Fri, 2 Mar 2012 08:20:57 +0000

Hi

We have written a 32-bit console application using Visual C++ Express 2008 that receives UDP packets on port 30000 from another (non-Windows) machine. When running on Windows XP our app receives the packets, but when running on Windows 7 it does not. I have configured Windows Firewall to open ports 30000-30002 to our application, so the packets should not be blocked.

 

Wireshark shows that the packets are indeed arriving at the PC.  What I am not sure of is whether they are getting through the firewall.  On what side of the firewall does Wireshark snoop?  If the packets are listed on Wireshark does it mean that they have got through the firewall?

Any suggestions or answers would be appreciated.

Best regards

David