Ping -A / SolarWinds DNS Audit will not resolve host names through Windows Firewall
Posted on 2008-11-18
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,