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1. Can you bypass the restrictions on account permissions (only VIP users will display all pictures) and crawl to all pictures? iis server
When the other party returns the image result based on judging the VIP user's session, it cannot be bypassed.
So you can test whether the other party’s server’s VIP restrictions are based on web pages (html) or images (jpg png).
In addition, you can also try various methods to obtain the session-cookies of other VIP users
Crawlers can only crawl data that normal users can see
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
When the other party returns the image result based on judging the VIP user's session, it cannot be bypassed.
So you can test whether the other party’s server’s VIP restrictions are based on web pages (html) or images (jpg png).
In addition, you can also try various methods to obtain the session-cookies of other VIP users
Crawlers can only crawl data that normal users can see