Windows Firewall and ICMP

It is recommended to enable ICMP (Internet Control Message Protocol) to share any error and status information after enabled Windows Firewall on your Windows XP SP2 machine.
  1. Open Windows Firewall if it is not open:
    1. Click Start, and then click Control Panel.
    2. Click Security Center.
    3. Select Windows Firewall.
  2. Select the Advanced tab.
  3. Click Settings... under ICMP
  4. Select all the checkboxes there in order to enable ICMP and click OK to close the window.
  5. Click OK to close the Windows Firewall window.
  6. Close Windows Security Center.