Attempting to block traffic from GA coming from our own resources, some of whom are on a dynamic IP, I used the "advanced" method suggested by GA. We created a page that would set a local cookie, then created a custom exlude filter using the string placed in the cookie.
The parameters for the filter, per the GA instuctions [google.com]:
Filter Type: Custom filter > Exclude
Filter Field: User Defined
Filter Pattern: InternalUser <- note we changed this value
Case Sensitive: No
This resulted in ALL traffic being excluded from the GA reports. I know this isn't much to go on, but any ideas on where I went wrong?