有人不停地下载 .pdf 文件，耗费我的流量，怎么办呢？已经屏蔽ip了，不过似乎无效，对方不是通过浏览器访问的。
222.223.3.122 - - [18/Sep/2015:07:15:40 -0500] "GET /download/Hi3518%2520HD%
2520IP%2520Camera%2520SoC%2520%25e7%2594%25a8%25e6%2588%25b7%25e6%258c%2587%
25e5%258d%2597.pdf HTTP/1.1" 403 17104 "-" "Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.3
6"
222.223.3.122 - - [18/Sep/2015:07:15:43 -0500] "GET /download/Hi3518%2520HD%
2520IP%2520Camera%2520SoC%2520%25e7%2594%25a8%25e6%2588%25b7%25e6%258c%2587%
25e5%258d%2597.pdf HTTP/1.1" 403 17104 "-" "Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.3
6"
222.223.3.122 - - [18/Sep/2015:07:15:44 -0500] "GET /download/Hi3518%2520HD%
2520IP%2520Camera%2520SoC%2520%25e7%2594%25a8%25e6%2588%25b7%25e6%258c%2587%
25e5%258d%2597.pdf HTTP/1.1" 403 17104 "-" "Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.3
6"
222.223.3.122 - - [18/Sep/2015:07:15:44 -0500] "GET /download/Hi3518%2520HD%
2520IP%2520Camera%2520SoC%2520%25e7%2594%25a8%25e6%2588%25b7%25e6%258c%2587%
25e5%258d%2597.pdf HTTP/1.1" 403 17104 "-" "Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.3
6"
222.223.3.122 - - [18/Sep/2015:07:15:45 -0500] "GET /download/Hi3518%2520HD%
2520IP%2520Camera%2520SoC%2520%25e7%2594%25a8%25e6%2588%25b7%25e6%258c%2587%
25e5%258d%2597.pdf HTTP/1.1" 403 17104 "-" "Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.3
6"
222.223.3.122 - - [18/Sep/2015:07:15:45 -0500] "GET /download/Hi3518%2520HD%
2520IP%2520Camera%2520SoC%2520%25e7%2594%25a8%25e6%2588%25b7%25e6%258c%2587%
25e5%258d%2597.pdf HTTP/1.1" 403 17104 "-" "Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.3
6"
222.223.3.122 - - [18/Sep/2015:07:15:46 -0500] "GET /download/Hi3518%2520HD%
2520IP%2520Camera%2520SoC%2520%25e7%2594%25a8%25e6%2588%25b7%25e6%258c%2587%
25e5%258d%2597.pdf HTTP/1.1" 403 17104 "-" "Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.3
6"
222.223.3.122 - - [18/Sep/2015:07:15:46 -0500] "GET /download/Hi3518%2520HD%
2520IP%2520Camera%2520SoC%2520%25e7%2594%25a8%25e6%2588%25b7%25e6%258c%2587%
25e5%258d%2597.pdf HTTP/1.1" 403 17104 "-" "Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.3
6"
222.223.3.122 - - [18/Sep/2015:07:15:46 -0500] "GET /download/Hi3518%2520HD%
2520IP%2520Camera%2520SoC%2520%25e7%2594%25a8%25e6%2588%25b7%25e6%258c%2587%
25e5%258d%2597.pdf HTTP/1.1" 403 17104 "-" "Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.3
6"
--
FROM 221.216.246.*