如何让电脑无法访问特定网站

有些时候我们需要限制电脑访问某些网站，这个也很简单，可以通过修改hosts文件实现。下面做个例子，让电脑无法访问国内一些新闻类网站。在win7下找到：C:/Windows/System32/drivers/etc/hosts文件，使用记事本打开hosts，在最后添加如下信息：

127.0.0.1 www.sohu.com #限制访问sohu

保存即可让本机无法访问sohu的网站了。

本机host文件的内容如下：

# 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
127.0.0.1 www.sohu.com 		#限制访问sohu
127.0.0.1 www.qq.com    	#限制访问qq
127.0.0.1 www.ifeng.com  	#限制访问ifeng
127.0.0.1 www.sina.com.cn  	#限制访问sina
127.0.0.1 www.163.com   	#限制访问163
127.0.0.1 www.xinhuanet.com 	#限制访问xinhuanet
127.0.0.1 www.people.com.cn 	#限制访问people.com.cn