win7 hosts原文件内容

什么是hosts文件?

hosts是一个没有扩展名的系统文件，其基本作用就是将一些常用的网址域名与其对应的IP地址建立一个关联“数据库”，

当用户在浏览器中输入一个需要登录的网址时，系统会首先自动从Hosts文件中寻找对应的IP地址，一旦找到，系统会立即打开对应网页，如果没有找到，则系统再会将网址提交DNS域名解析服务器进行IP地址的解析，如果发现是被屏蔽的IP或域名，就会禁止打开此网页!

WIN7的hosts 默认文件

文件地址：C:\WINDOWS\system32\drivers\etc\hosts

默认里面的内容如下：

# Copyright (c) 1993-2009 Microsoft Corp.

#

# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.

#

# This file contains the mappings of IP addresses to host names. Each

# entry should be kept on an individual line. The IP address should

# be placed in the first column followed by the corresponding host name.

# The IP address and the host name should be separated by at least one

# space.

#

# Additionally, comments (such as these) may be inserted on individual

# lines or following the machine name denoted by a '#' symbol.

#

# For example:

#

# 102.54.94.97 rhino.acme.com # source server

# 38.25.63.10 x.acme.com # x client host

# localhost name resolution is handled within DNS itself.

# 127.0.0.1 localhost

# ::1 localhost

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