大家知道那些防盗链的技术？

[scgqq]

如使用reffer,cookie,随机密码等等，请详细解说一下每种方法的原理？

[saucer]

basically, people use HTTP_REFERER header or ServerVariables to identify who is trying to retrieve the resource, you can check Request.UrlReferrer in your code and redirect to somewhere else if it is not from your own site, but you should consider to write a HttpModule or an ISAPI dll to do it, see

http://www.michaelbrumm.com/leechblocker.html

[scgqq]

还有人说吗？