Hi Everyone! I'm trying to block this service from ISA2004 thru Configure HTTP using Signature or Headers yet still users can still connect to this internet service. Below are the info's I got (using ethereal). The service is using 443 as it's port connection. Is configuring HTTP will also affect HTTPS? POST /tracker.php HTTP/1.1 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */* Content-Type: application/x-www-form-urlencoded User-Agent: Microsoft URL Control - 6.00.8862 Host: register.chikka.com Content-Length: 33 Cache-Control: no-cache chikkaid=639273451095&client_id=0 Please help. I can't migrate some of our clients to this server if I cannot block this thing. Thanks, Mykel DISCLAIMER: This Message may contain confidential information intended only for the use of the addressee named above. If you are not the intended recipient of this message you are hereby notified that any use, dissemination, distribution or reproduction of this message is prohibited. If you received this message in error please notify your Mail Administrator and delete this message immediately. Any views expressed in this message are those of the individual sender and may not necessarily reflect the views of GMA Network, Inc.