netsh firewall set icmpsetting 8
netsh firewall set icmpsetting 8 disable
set servers=servers.txt
for /f "delims=" %%x in (%servers%) do (
psexec \\%%x -s -i -d netsh firewall set icmpsetting 8
)
source http://www.petri.co.il/enable-ping-windows-2008-server.htm