Linux下 规则文件.htaccess(手工创建.htaccess文件到站点根目录)

<IfModule mod_rewrite.c>
RewriteEngine On
#Block spider
RewriteCond %{HTTP_USER_AGENT} "Webdup|AcoonBot|AhrefsBot|Ezooms|EdisterBot|EC2LinkFinder|jikespider|Purebot|MJ12bot|WangIDSpider|WBSearchBot|Wotbox|xbfMozilla|Yottaa|YandexBot|Jorgee|SWEBot|spbot|TurnitinBot-Agent|mail.RU|curl|perl|Python|Wget|Xenu|ZmEu" [NC]
RewriteRule !(^robots\.txt$) - [F]
</IfModule>

windows2003下 规则文件httpd.conf　　　（在虚拟主机控制面板中用 “ISAPI筛选器自定义设置 "  开启自定义伪静态 Isapi_Rewite3.1 ）

#Block spider
RewriteCond %{HTTP_USER_AGENT} (Webdup|AcoonBot|AhrefsBot|Ezooms|EdisterBot|EC2LinkFinder|jikespider|Purebot|MJ12bot|WangIDSpider|WBSearchBot|Wotbox|xbfMozilla|Yottaa|YandexBot|Jorgee|SWEBot|spbot|TurnitinBot-Agent|mail.RU|curl|perl|Python|Wget|Xenu|ZmEu) [NC]
RewriteRule !(^/robots.txt$) - [F]

windows2008下 web.config

<rule name="Block spider">
      <match url="(^robots.txt$)" ignoreCase="false" negate="true" />
      <conditions>
        <add input="{HTTP_USER_AGENT}" pattern="Webdup|AcoonBot|AhrefsBot|Ezooms|EdisterBot|EC2LinkFinder|jikespider|Purebot|MJ12bot" ignoreCase="true" />
      </conditions>
      <action type="CustomResponse" statusCode="403" statusReason="Forbidden" statusDescription="Forbidden" />
</rule>

注：规则中默认屏蔽部分不明蜘蛛，要屏蔽其他蜘蛛按规则添加即可
附各大蜘蛛名字：
google蜘蛛：googlebot
百度蜘蛛：baiduspider
yahoo蜘蛛：slurp
alexa蜘蛛：ia_archiver
msn蜘蛛：msnbot
bing蜘蛛：bingbot
altavista蜘蛛：scooter
lycos蜘蛛：lycos_spider_(t-rex)
alltheweb蜘蛛：fast-webcrawler
inktomi蜘蛛：slurp
有道蜘蛛：YodaoBot和OutfoxBot
热土蜘蛛：Adminrtspider
搜狗蜘蛛：sogou spider
SOSO蜘蛛：sosospider
360搜蜘蛛：360spider