I have implement a "deny any any" ACL on my outside interface of a 1841 using the Cisco IOS. On the inside interface I have applied an "ip inspect" statement to enable CBAC stateful inspection for the specified protocols including HTTP, HTTPS and FTP. Now using Windows Update I can browse to the site and view my required downloads but when I start the download nothing download loads. This only started happeing after apply the ACL and inpsect statement. Can anyone tell me what I need to do further on the inspect statement to allow Windows Update to download its updates?