The web filter is the part that expects to watch the HTTP traffic as it flows through ISA. With the exception of web publishing, HTTPS traffic is effectively invisible to ISA and therefore any policies enacted via the web filter (think HTTP Filter, too) cannot be applied and ISA will default to "when in doubt, trash it" mode. -----Original Message----- From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Thor (Hammer of God) Sent: Wednesday, June 20, 2007 1:15 PM To: isapros@xxxxxxxxxxxxx Subject: [isapros] Web Filter with HTTPS Just a sanity check here... why would all HTTPS traffic fail if the Web Filter was bound to the HTTPS protocol? t All mail to and from this domain is GFI-scanned.