捕获和转换Web的工具

我想阻止从GrabzIt访问对我的回调处理程序的访问,这可能吗?

Yes, while it is impractical to white-list our callbacks by IP address. All of our callbacks have the user agent header of GrabzIt therefore you can use .htaccess or some other method to block all HTTP requests to your handler except from those with the GrabzIt user agent.

Here is an example for htaccess:

SetEnvIf User-Agent .*GrabzIt* grabzit

Order deny,allow
Deny from all
Allow from env=grabzit