NetWare Management Portal has been denied by access control filters set
by the Administrator.
The link below obviously does not work because the filters are set to

How can I change the filters? Is there a config' file on the server that
I can modify? Is there a httpstk or portal startup flag to bypass filters?

Changing User Access Using the IP Address Access Control Page
From the IP Address Access Control page, you can limit access to Novell
Remote Manager.