如何手工屏蔽恶意网站?巧妙修改hosts文件

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  经常在浏览网页时,跳出一堆的垃圾广告,是不是很烦人?其实这个问题是很容易解决的,但至今仍然有很多人不知道,经常在抱怨说自己的电脑被病毒网页锁定,无法关闭,或者经常跳出广告窗口,不知该如何处理。

  今天,小编就告诉你一个秘密,,Windows有一个鲜为人知的功能可以帮助你屏蔽这些恶意网站,这就是hosts文件,手工修改它就能实现屏蔽网站功能,不用安装第三方工具软件。 那你肯定会问什么是hosts文件?

  一、什么是hosts文件

  hosts文件存在于Windows目录下的system32\drivers\etc中。这个文件没有扩展名,但是,我们可以使用记事本来打开。打开文件,可以看见其中有很多英文解释,在文件末尾,有127.0.0.1localhost这一行字。这个文件包括主机的IP地址和映像名称,输入的每一个地址都应该放在单独的行列中。IP地址应该被放在对应的主机名的第一栏中。IP地址与主机名之间应该至少有一个空格。

  由于我们在访问网站时,对hosts文件的请求级别比DNS服务器高,因此修改hosts文件可以对指定的网址进行处理,达到防止用户访问特定网站的效果。

  hosts文件还可以加快我们对网站的访问速度。在我们访问网络的时候,我们的计算机向DNS服务器发送一个网络域名,DNS服务器则把这个域名解析成为一个IP地址后返回给计算机。这个过程会使访问网站的速度减慢。正确地对hosts文件进行可以加快对网站的访问速度。如:在hosts文件中添加指定的IP地址,使得DNS服务器不用对网页的地址进行解析。

  其实,hosts文件还有其他的特殊高级功能:如方便局域网用户顺利连接系统等。这些功能可以大大减少我们对网络的访问时间,使我们对网络的访问更快捷、更方便。

  二、屏蔽特定网站

  要屏蔽特定网站,我们可以如下操作。

  1.在C:\windows\system32\drivers\etc中,找到hosts文件,用记事本打开。

  2.在文件的最下方输入你要屏蔽的几个网站的地址,格式如下假设要屏蔽的网址为my123***.com:

  127.0.0.1 my123***.com

  127.0.0.1 my123***.com

  3.保存hosts文件。

  4.将hosts文件的属性改为只读,防止被病毒篡改。

  三、加速访问网站

  要加快网址的解析速度,为我们访问网站提速,先要查找你所需要访问的网站的IP地址,可以使用ping命令。然后,打开hosts文件,在文件的末尾加上“IP地址域名”。

  最后,保存hosts文件并修改为只读属性。当你再次浏览该网站时,域名—IP地址的解析工作就由你本机完成了,不需要访问DNS服务器,加快了网站访问速度。

  当你利用hosts文件手工修改它之后,你就不会抱怨说自己的电脑被病毒网页锁定,无法关闭,或者经常跳出广告窗口,不知该如何处理

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