Question : Ping -A / SolarWinds DNS Audit will not resolve host names through Windows Firewall

I am trying to perform some Network Discovery / DNS Audits on a corporate LAN with about 50 PC Workstation hosts.  The hosts are mostly Windows XP Professional SP2/3 and belong to an Active Directory Domain with a Windows Server 2003 as the main Domain Controller hosting DNS.  

Yesterday when using a couple of the utilities from the Solarwinds Engineers Toolset (DNS Audit and Ping Scan) to try and create a list of HOSTS and their respective IP Addresses, I noticed that about half of the workstations would not come up in the SCAN results.  After a bunch of troubleshooting, I discovered that Windows Firewall was causing this problem.  If I turn Windows Firewall off, I can resolve the DNS hostname of that machine, but if it's on, it will not return the DNS name, and ping -a to the IP address will not work either.  

Can anyone help me figure out what settings I need to configure the windows firewall with so that I don't have to turn it off completely?  I would like to be able to get ping -a to work through the windows firewall.

Thanks in advance,

Answer : Ping -A / SolarWinds DNS Audit will not resolve host names through Windows Firewall

Oh...I apologize for not providing clear instruction. I wanted to know whether you are familiar with network trace using Wireshark or Network Monitor 3.2. It can capture all the activity that happens on the wire. You can take a trace while doing the Ping -a and it will show exactly what is happening on the wire for a better understanding. Let me know if you need any assistance for running a network trace. We need to do this on the source machine and the target machine simultaneously.

I hope it is clear now..:)