如需要屏蔽ip：7.7.7.7和8.8.8.8

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 ip
RewriteCond %{http:X-Forwarded-For}&%{REMOTE_ADDR}&%{http:X-Real-IP} (7.7.7.7|8.8.8.) [NC]
RewriteRule (.*) - [F]
</IfModule>

windows2008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="band ip" stopProcessing="true">
                    <match url="(.*)" />
                    <conditions logicalGrouping="MatchAny">
                        <add input="%{HTTP_X_FORWARDED_FOR}&amp;%{REMOTE_ADDR}&amp;%{HTTP_X_Real_IP}" pattern="(7.7.|8.8.8.8)" />
                    </conditions>
                    <action type="AbortRequest" />
                </rule>
            </rules>
        </rewrite>
    </system.webServer>  
</configuration>

java主机屏蔽IP或IP段

在tomcat管理-》编辑server.xml   

找到  <Host></Host>

在节点中配置

<Valve className="org.apache.catalina.valves.RemoteAddrValve" deny="7.7.7.7|8.8.8.*"/>

屏蔽后重启tomcat生效，访问提示403