如果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。
可以优先考虑升级虚拟主机型号以获得更多的流量或升级为云服务器（不限流量）。更多详情请访问： 查看链接
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} "Bytespider|Amazonbot|YisouSpider|ClaudeBot|GPTBot|meta-externalagent|SemrushBot|DotBot|BLEXBot|SMTBot|PetalBot|Apache-HttpClient|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]
</IfModule>
Windows2008、2012或更高系统下规则文件web.config (手工创建web.config文件到站点根目录)
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule name="Block spider">
<match url="(^robots.txt$)" ignoreCase="false" negate="true" />
<conditions>
<add input="{HTTP_USER_AGENT}" pattern="Bytespider|Amazonbot|YisouSpider|ClaudeBot|GPTBot|meta-externalagent|SemrushBot|DotBot|BLEXBot|SMTBot|PetalBot|Apache-HttpClient|SemrushBot|Webdup|AcoonBot|AhrefsBot|Ezooms|EdisterBot|EC2LinkFinder|jikespider|Purebot|MJ12bot|WangIDSpider|WBSearchBot|Wotbox|xbfMozilla|Yottaa|YandexBot|Jorgee|SWEBot|spbot|TurnitinBot-Agent|mail.RU|curl|perl|Python|Wget|Xenu|ZmEu|^$" ignoreCase="true" />
</conditions>
<action type="AbortRequest"/>
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>
注：“{HTTP_USER_AGENT}”所在行中是不明蜘蛛名称，根据需要添加以"|"为分割。
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：sogou spider
SOSO蜘蛛：sosospider
360搜蜘蛛：360spider
apache、iis屏蔽限制ip访问(适用虚拟主机)
apache、iis规则设置防盗链
请参照工单，根据实际情况设置。文章来源：查看链接
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