客户如果使用的美国VPS是正常的搜索引擎蜘蛛访问，不建议对蜘蛛进行禁止，否则网站在百度等搜索引擎中的收录和排名将会丢失，造成客户流失等损失。

然后在配置文件中按以下系统规则配置



Linux下规则文件.htaccess(手工创建.htaccess文件到站点根目录)
RewriteEngineOn#BlockspiderRewriteCond%{HTTP_USER_AGENT}"SemrushBot|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$)-[F]windows2003下规则文件httpd.conf
#BlockspiderRewriteCond%{HTTP_USER_AGENT}(SemrushBot|Webdup|AcoonBot|AhrefsBot|Ezooms|EdisterBot|EC2LinkFinder|jikespider|Purebot|MJ12bot|WangIDSpider|WBSearchBot|Wotbox|xbfMozilla|Yottaa|YandexBot|Jorgee|SWEBot|spbot|TurnitinBot-Agent|mail.RU|curl|perl|Python|Wget|Xenu|ZmEu)[NC]RewriteRule!(^/robots.txt$)-[F]windows2008下web.config
Nginx对应屏蔽规则

代码需添加到对应站点配置文件server段内
if($http_user_agent~"Bytespider|Java|PhantomJS|SemrushBot|Scrapy|Webdup|AcoonBot|AhrefsBot|Ezooms|EdisterBot|EC2LinkFinder|jikespider|Purebot|MJ12bot|WangIDSpider|WBSearchBot|Wotbox|xbfMozilla|Yottaa|YandexBot|Jorgee|SWEBot|spbot|TurnitinBot-Agent|mail.RU|perl|Python|Wget|Xenu|ZmEu|^$"){return444;}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

百度手机蜘蛛：baiduboxapp

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：sogouspider

SOSO蜘蛛：sosospider

360搜蜘蛛：360spider