find string in post

Hi,

 

This my main problem.

 

I have a site and I want to scan *.exe file that the users uploading to the site.

 

I need to find the exe file extention and transfare the packet to another machine (eSafe).

 

This machine scan the files, if the file past the scan the eSafereturn the packet to the F5 and from to the web server. If the file failed the scan to eSafe drops the packet automaticlly.