说明：  DELPHI 实现 开启和关闭Windows xp 防火墙 DELPHI 实现 开启和关闭Windows xp 防火墙 DELPHI 实现 开启和关闭Windows xp 防火墙
(DELPHI realize opened and closed DELPHI realize Windows xp firewall turned on and off DELPHI realize Windows xp firewall turned on and off Windows xp firewall)