WFP call out driver seems to be very slow RRS feed

  • Question

  • Hi,

    I have WFP call out driver which filters certain web sites and ports. The filetring of data happening at MonitorCoStreamCalloutV4


    . The filtering process seems to be very slow even though it happens successfully. Could you please provide some information on why the process could slow down ?

    Thanks in advance.


    Friday, June 3, 2011 11:38 AM

All replies

  • Friday, June 10, 2011 10:21 AM
  • Hi Alvaro,

    Thanks for your reply. I will go through this link.



    Monday, June 13, 2011 6:59 AM


    I am filtering the web sites and ports at STREAM_V4 layer. The sites are being blocked correctly based on my configuration. But it takes a long time to show the page "Internet explorer cannot display the webpage"


    I am using a filtering logic to identify the sites which needs to be blocked. But this seems to be happening fairly quickly. The delay is happening only to the sites which have been blocked and other sites are displayed through browser much faster.


    The blocking code is as follows


    classifyOut->actionType = FWP_ACTION_BLOCK;

    // Clear the FWPS_RIGHT_ACTION_WRITE flag

    classifyOut->rights &= ~FWPS_RIGHT_ACTION_WRITE;



    Could you please provide any pointers on this? Any help on this is much appreciated.




    Wednesday, July 27, 2011 12:49 PM