O1 - Hosts: 216.177.73.139 auto.search.msn.com O1 - Hosts: 216.177.73.139 search.netscape.com O1 - Hosts: 216.177.73.139 ieautosearch 在上面的例子中，默认搜索页（auto.search.msn.com、search.netscape.com、ieautosearch是不同情况下的默认搜索页）被指向了216.177.73.139这个IP地址。造成每次使用浏览器的搜索功能，都被带到216.177.73.139这个地方。 下面是XP的原始Hosts文件的内容 # Copyright (C) 1993-1999 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 127.0.0.1 localhost 所有以#开始的行都是注释内容，不起作用。最后一行指明本地主机（localhost）的IP地址为127.0.0.1（这是默认的）。 3. 一般建议
O1 - Hosts file is located at C:\Windows\Help\hosts 如果发现hosts文件出现在C:\Windows\Help\这样的文件夹中，那么很可能感染了CoolWebSearch（跟上面提到的Lop.com一样著名的恶意网站家族），应该使用HijackThis修复相关项。当然，别忘了还有CoolWebSearch的专杀——CoolWebSearch Shredder （CWShredder.exe）
