System for eliminating viruses at a web page server

Abstract

A system for providing anti-virus protection to a web server. A web server is disclosed, comprising: an active element filter for stripping an active element from a web page being stored at the web server such that the active element is not stored at the web server; and an active element insertion system for inserting a new active element into the web page when the web page is requested from the web server, wherein the new active element performs a similar action to that of the active element that was stripped by the active element filter.

1 . A web server having anti-virus protection, comprising: 
 an active element filter for stripping an active element from a web page being stored at the web server such that the active element is not stored at the web server; and    an active element insertion system for inserting a new active element into the web page when the web page is requested from the web server, wherein the new active element performs a similar action to that of the active element that was stripped by the active element filter.    
   
   
       2 . The web server of  claim 1 , wherein the active elements comprise constructs selected from the group consisting of: JavaScript and VBScript.  
   
   
       3 . The web server of  claim 1 , wherein the active elements comprise calls to active processes.  
   
   
       4 . The web server of  claim 1 , wherein the active element insertion system generates new active elements for requested web pages using constructs stored in compiled code of the web server.  
   
   
       5 . The web server of  claim 1 , wherein the active element insertion system includes a set of files stored with the web server, wherein each file includes an active element that can be inserted into a requested web page.  
   
   
       6 . The web server of  claim 1 , wherein the active element insertion system determines what active elements are required in a requested web page based on attributes of the web page.  
   
   
       7 . A program product stored on recordable medium for providing anti-virus protection to a server, comprising: 
 means for stripping active elements from files being stored at the server such that the active elements are deleted and not stored on the server with the files;    means for determining if active elements are required for a file being requested from the server; and    means for inserting an active element into the requested file if an active element is required.    
   
   
       8 . The program product of  claim 7 , wherein the files comprise web pages.  
   
   
       9 . The program product of  claim 8 , wherein the active elements comprise constructs selected from the group consisting of JavaScript and VBScript.  
   
   
       10 . The program product of  claim 9 , wherein the means for inserting includes executing compiled code having: 
 active element constructs; and    rules for inserting the constructs into a requested web page.    
   
   
       11 . The program product of  claim 10 , wherein the means for inserting determines what active elements are required in the requested web page based on attributes of the requested web page.  
   
   
       12 . The program product of  claim 8 , wherein the means for inserting includes a set of files stored with the web server, wherein each file includes an active element that can be inserted into a requested web page.