Apache的IP访问控制
Apache防盗链主要是防止本网站的链接被别人盗用使用Apache访问控制，禁用来源IP访问
1、修改网站的虚拟主机配置文件
从主配置文件中拷贝模板：
# vim /usr/local/apache2/conf/httpd.conf
# vim /usr/local/apache2/conf/extra/httpd-vhosts.conf
........
AllowOverride None
Options None
Order allow，deny
Allow from all 允许所有访问
Deny from 127.0.0.1访问 禁用127.0.0.1访问
...........
2、测试
# curl -x 127.0.0.1:80 -I www.test.com 127.0.0.1被禁止访问
HTTP/1.1 403 Forbidden
Date: Wed, 02 Dec 2015 02:47:23 GMT
Server: Apache/2.2.31 (Unix) PHP/5.4.45
Content-Type: text/html; charset=iso-8859-1
# curl -x 192.168.101.230:80 -I www.test.com 192.168.101.230正常访问
HTTP/1.1 301 Moved Permanently
Date: Wed, 02 Dec 2015 02:47:42 GMT
Server: Apache/2.2.31 (Unix) PHP/5.4.45
X-Powered-By: PHP/5.4.45
location: forum.php
Cache-Control: max-age=0
Expires: Wed, 02 Dec 2015 02:47:42 GMT
Content-Type: text/html
# curl -x 192.168.101.230:80 -I www.test.com/forum.php 正常访问
HTTP/1.1 200 OK
3、如果希望白名单限制管理员登录网页URI：http://www.test.com/admin.php，怎么做？
........
Order deny,allow
Deny from all 禁用所有访问
Allow from 127.0.0.1 允许127.0.0.1访问
Allow from 192.168.101.230
...........
重启Apache服务后，用PC（192.168.101.175）访问http://www.test.com/admin.php，报错403Forbidden。
# curl -x 192.168.101.230:80 -I http://www.test.com/admin.php
HTTP/1.1 200 OK 200，但是192.168.101.230可以正常访问
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