我们网站上的资源如果没有设置防盗链，那么其他人可以通过资源链接盗用我们的资源，占用我们的带宽，影响我们网站对合法用户的服务质量。举个例子，假如我们网站上有一张图片，如下图所示：

复制图片地址，可以直接在浏览器中搜到我们的图片，也可以在其他地方通过该图片地址引用或下载该图片。

为了不让别人盗用我们的资源，我们可以在服务器上设置防盗链。

编辑虚拟主机配置文件

[root@cp1 vhosts]# vim test.conf

添加指定类型文件的防盗链

没错误重新加载配置文件

[root@cp1 vhosts]# /usr/local/nginx/sbin/nginx -t

nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok

nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

[root@cp1 vhosts]# /usr/local/nginx/sbin/nginx -s reload

使用curl测试，看看百度能不能引用我们的图片

[root@cp1 vhosts]# curl -e "http://www.baidu.com" -I -x127.0.0.1:80 ‘http://www.test.com/data/attachment/forum/201702/24/020448ytywyltbbzatdgdo.jpg‘

HTTP/1.1 403 Forbidden

Server: nginx/1.6.2

Date: Thu, 23 Feb 2017 18:24:47 GMT

Content-Type: text/html

Content-Length: 168

Connection: keep-alive

正常情况下是可以访问的

[root@cp1 vhosts]# curl -I -x127.0.0.1:80 ‘http://www.test.com/data/attachment/forum/201702/24/020448ytywyltbbzatdgdo.jpg‘

HTTP/1.1 200 OK

Server: nginx/1.6.2

Date: Thu, 23 Feb 2017 18:22:34 GMT

Content-Type: image/jpeg

Content-Length: 188486

Last-Modified: Thu, 23 Feb 2017 18:04:49 GMT

Connection: keep-alive

ETag: "58af2441-2e046"

Expires: Fri, 10 Mar 2017 18:22:34 GMT

Cache-Control: max-age=1296000

Accept-Ranges: bytes

指定的白名单能访问我们的图片

[root@cp1 vhosts]# curl -e "http://www.test.com" -I -x127.0.0.1:80 ‘http://www.test.com/data/attachment/forum/201702/24/020448ytywyltbbzatdgdo.jpg‘

HTTP/1.1 200 OK

Server: nginx/1.6.2

Date: Thu, 23 Feb 2017 18:25:24 GMT

Content-Type: image/jpeg

Content-Length: 188486

Last-Modified: Thu, 23 Feb 2017 18:04:49 GMT

Connection: keep-alive

ETag: "58af2441-2e046"

Expires: Fri, 10 Mar 2017 18:25:24 GMT

Cache-Control: max-age=1296000

Accept-Ranges: bytes

[root@cp1 vhosts]# curl -e "http://www.aaa.com" -I -x127.0.0.1:80 ‘http://www.test.com/data/attachment/forum/201702/24/020448ytywyltbbzatdgdo.jpg‘

HTTP/1.1 200 OK

Server: nginx/1.6.2

Date: Thu, 23 Feb 2017 18:25:32 GMT

Content-Type: image/jpeg

Content-Length: 188486

Last-Modified: Thu, 23 Feb 2017 18:04:49 GMT

Connection: keep-alive

ETag: "58af2441-2e046"

Expires: Fri, 10 Mar 2017 18:25:32 GMT

Cache-Control: max-age=1296000

Accept-Ranges: bytes

其他不能访问我们的图片

[root@cp1 vhosts]# curl -e "http://www.google.com" -I -x127.0.0.1:80 ‘http://www.test.com/data/attachment/forum/201702/24/020448ytywyltbbzatdgdo.jpg‘

HTTP/1.1 403 Forbidden

Server: nginx/1.6.2

Date: Thu, 23 Feb 2017 18:24:24 GMT

Content-Type: text/html

Content-Length: 168

Connection: keep-alive

LNMP搭建11：Nginx配置防盗链