1. Riverbed SteelCentral NetProfiler User’s Guide, Version 10.9. In the chapter "Running Reports," the section "Creating an Advanced Traffic Report" details the filter syntax. It explicitly states, "You can use the following operators in filter expressions: ... != (not equal to) ... NOT." This functionality is unique to the Advanced report type. The sections describing other report types do not mention this capability.
2. Riverbed SteelCentral NetProfiler Dashboards and Reports Guide. The section on "Advanced Traffic Reports" describes its purpose: "to create a custom report that is not available in the standard reports list." It further details the use of a "Filter" text box where complex expressions, including negations, can be entered, a feature absent from the configuration of standard reports like Applications, Interfaces, or Hosts.