Links download protect

Can you help me?

[usax2x]

I have any question
1. I'm a [member] of [a membership] site.
When I login to the site and then try to download any files on the site, all links are working with [my internet download manager]. [With the manager,] I found the real links, for [example] link http://64.**.38.51/site/download/NTinh/NTinhC2_0.mpg. [But when I copy] the link to try to download again, the link doesn't work. But downloading direct [from the links on the site works.]

I want to say the links in the site can't copy.
2. somebody know which script they using or tell me how can I do like them
Thanks a lot

[edited by: jdMorgan at 10:45 pm (utc) on June 15, 2005]
[edit reason] Removed specifics. Please see TOS. [/edit]

[jdMorgan]

usax2x,

Welcome to WebmasterWorld!

This is probably a cookies-based system based on user authentication. We've discussed this many times, usually in the context of anti-hotlink [google.com]ing techniques.

Jim

[usax2x]

Hi Jim
thanks for reply
Can you writer file .htaccess of probably a cookies-based system based on user authentication for me again? please
I will protect folder:
/myfolder/ <<<< will protect
/myfolder/test1.mpg
/myfolder/test2.mpg
/myfolder/test3.mpg
[http://mysite.com/myfolder/test1.mpg] just work on my site
[http://mysite**.com/myfolder/test1.mpg] would add in secure download by VBB [http://mysite.com/sdownload/download.php?id=?]
thanks a lot