Securing Exchange ical url

I am now trying to use an irule with ACCESS::enable to enable the Access Profile for that url only.

After I successfully authenticate I am getting a "cannot display the webpage" in Internet Explorer.

Does anyone have any ideas on how to resolve this?

Cheers,

Steve

when HTTP_REQUEST { switch -glob [string tolower [HTTP::path]] { "/owa/calendar/user@mydomain/Calendar/calendar.ics" { Enable Access Profile for these paths ACCESS::enable } default { ACCESS::disable } } }