分享使用Windows自带防火墙的小窍门

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  如今,防火墙和杀毒软件一样,都已是我们上网的必备工具。然而,网上各种天花乱坠的广告,总叫人摸不着头脑。还好,Windows XP系统为了更好进行网络安全管理,特意为大家提供了防火墙功能,只要大家巧妙地使用该功能,就可以根据实际需要允许或拒绝网络信息通过,从而达到防范攻击、保护网络安全的目的,还在等什么?赶紧来体验下.

  锁定防火墙,谨防破坏

  在多人共用一台计算机的办公场所中,每个用户要是都能随意打开防火墙属性设置窗口,来胡乱调整防火墙的安全参数时,那么本地计算机的安全防范能力就会大大严重,严重的话还能导致本地计算机无法上网访问。为了谨防本地系统防火墙参数受到胡乱破坏,我们可以按照下面的操作步骤将防火墙属性设置窗口锁定起来,以避免他人随意调整防火墙参数:

  首先依次单击工作站系统桌面中的“开始”/“运行”菜单选项,并在其后弹出的文本框中执行字符串命令“gpedit.msc”,进入到本地工作站系统的组策略编辑界面;

  其次在该编辑界面的左侧显示窗格中,用鼠标展开其中的“计算机配置”项目分支,然后将该分支下面的“管理模板”、“网络”、“网络连接”、 “Windows防火墙”、“标准配置文件”选项依次选中,并在“标准配置文件”选项所对应的右侧显示窗格中,双击其中的“Windows防火墙:保护所有网络连接”策略,进入到目标策略属性设置界面;

  在该界面中看看“Windows防火墙:保护所有网络连接”策略当前是否处于“已启用”设置状态,倘若发现该策略已经被启动的话,那我们必须及时选中“已禁用”选项,再单击一下“确定”按钮,如此一来普通用户就无法在防火墙属性设置界面中随意调整安全参数了。

  恢复防火墙,排除故障

  为了让防火墙有针对性地工作,我们常常需要对其中的参数进行合适设置,可是我们有时尝试打开防火墙参数设置界面时,发现防火墙功能并不能被启用。遇到这种情形时,多半是工作站系统中有关防火墙的系统文件受到了损坏,此时要想让防火墙重新工作,我们必须按照如下步骤对其恢复:

  首先在Windows系统桌面中依次执行“开始”、“运行”命令,从弹出的系统运行框中,输入字符串命令“cmd”,单击“确定”按钮后,将系统运行状态切换到MS-DOS命令行状态;

  其次在MS-DOS工作窗口的命令行中,执行“Rundll32 setupapi,InstallHinfSection Ndi-Steelhead 132 %windir%\inf\netrass.inf”字符串命令,待该命令被成功运行后,再将计算机系统重新启动一下;

  接下来再次进入到MS-DOS工作窗口,然后在DOS命令行中输入字符串命令“netsh firewall reset”,单击回车键后,受损的Windows防火墙工作状态就能动恢复到以前默认状态了;之后,我们就能重新打开防火墙的属性设置界面,来对其中的各项参数进行有针对性地设置了。

  小提示:在MS-DOS工作窗口中,我们可以巧妙地利用Windows系统自带的一些网络命令来高效管理防火墙。例如,要想集中查看防火墙的各项设置参数时,我们只要在DOS命令行中执行字符串命令“netsh firewall show config”,那样的话Windows系统就会把防火墙各项配置信息自动列写出来,如此一来我们在查看防火墙的配置信息时就能一目了然;要是我们希望将工作站系统自带防火墙功能暂时停用的话,那只要在DOS命令中简单地执行一下字符串命令“netsh firewall set opmode mode=disable”就可以了,而无须先打开防火墙参数设置界面,这样就能提高工作效率。

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