Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations Chriss Miller on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
Preventing website downloads
- Thread starter SLG
- Start date
Hi
Password protection. That is the one invented for access control.
[ul]
[li]Disallow access in robots.txt. Some downloaders will obey, but search engine crawlers certainly will index them.[/li]
[li]Check the HTTP_REFERER header. Some downloaders will be excluded, but you will deny the access for some legitimate human visitors too.[/li]
[li]Check the USER_AGENT header. Some downloaders will be excluded, but is a common practice to fake it.[/li]
[li]Check for interval between subsequent requests. Some downloaders will be excluded, but is very low probability to work.[/li]
[/ul]
Anyway, a visitor could just visit your site, than saving the images from the brewser cache. Or a proxy cache.
Feherke.
Password protection. That is the one invented for access control.
[ul]
[li]Disallow access in robots.txt. Some downloaders will obey, but search engine crawlers certainly will index them.[/li]
[li]Check the HTTP_REFERER header. Some downloaders will be excluded, but you will deny the access for some legitimate human visitors too.[/li]
[li]Check the USER_AGENT header. Some downloaders will be excluded, but is a common practice to fake it.[/li]
[li]Check for interval between subsequent requests. Some downloaders will be excluded, but is very low probability to work.[/li]
[/ul]
Anyway, a visitor could just visit your site, than saving the images from the brewser cache. Or a proxy cache.
Feherke.
sedj
Programmer
- Aug 6, 2002
- 5,610
There is no real way to stop someone harvesting your website if you wish anyone (ie joe public) to view the site. The point of a website is to allow browsers to download content for display to users - so if someone wants to download your images, then as a long as a browser can, then someone can do it programmatically also.
--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software
--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software
- Thread starter
- #4
Hi
Ooos. Now I see that I forgot the most important word in the first solution :
[ul]
[li]Disallow access in robots.txt. Some downloaders will obey, but search engine crawlers certainly will [red]not[/red] index them.[/li]
[/ul]
Feherke.
Ooos. Now I see that I forgot the most important word in the first solution :
[ul]
[li]Disallow access in robots.txt. Some downloaders will obey, but search engine crawlers certainly will [red]not[/red] index them.[/li]
[/ul]
Feherke.
- Status
Similar threads
- Locked
- Question