Tips:

1.Use SSL/https to ensure safety;
2.Forbid popular spiders like Google、Baidu;
3.Forbid any illegal referer;
4.Forbid any illegal robot;
5.Limit frequency of the same IP at 10 times in 1 second;
6.Can only access this site by typing the domian or using bookmarks;
7.If pages show "403 Forbid",try to delete "cookies" in your browser;