Wireshark-users: Re: [Wireshark-users] UDP port range in Tshark
From: Guy Harris <[email protected]>
Date: Tue, 1 Dec 2009 13:26:18 -0800
On Dec 1, 2009, at 12:46 PM, Boaz Galil wrote:

We are using old version of winpcap. In any case we are sure that there is traffic between this range (as we are getting in - wireshark without any filter).
Download windump, if you haven't done so already, and then do

windump -d "host x.x.x.x and ((udp [2:2] >= 20 and udp [2:2] <= 80) or (udp [0:2] >= 20 and udp [0:2] <= 80))"
(where "x.x.x.x" is the IP address you used).

Then do a Wireshark/TShark capture without a filter, save it to a file, and then try
	windump -r {the file name} "host x.x.x.x  and  ((udp [2:2] >= 20 and  
udp [2:2] <= 80) or (udp [0:2] >= 20 and  udp [0:2] <= 80))"
and see if it reports anything.