Due to an unidentified problem, windows cannot display the windows firewall settings

To fix this problem, two dlls need to be re-registered:

First: Click Start -> Run, Then type

regsvr32 c:\windows\system32\atl.dll
and hit OK

Second:
regsvr32 c:\windows\system32\hnetcfg.dll
and Hit OK

This should allow for the viewing and configuration of the XP firewall settings.

If you need to enable or disable firewall from command prompt, here are the commands –
  To turn it off type: netsh firewall opmode disable

  To turn it on type: netsh firewall opmode enable

Thanks.