Can not get domain user list, error:[Size limit exceeded].
From Wiki of WFilter NG Firewall
1 Reason
WFilter NG Firewall can not retrieve users from the domain controller. A size limit error encounted. This usually happens when the domain has more than 1000 users.
2 Solution
Modify the "MaxPageSize" setting in your domain controller. Here is a guide: How to fix “size limit exceeded” issue of “AD Intergration” in WFilter?