Explanation/Reference:
About VLAN group policies
Policies are a collection of filters or rules that provide a method for setting up security configuration options for VLAN groups. You can create customized policies for each VLAN group based on the requirements and the threat type for each group.
You can customize the policies for the groups by setting the reputation scores. You can set up policies for each group to protect your network from the following threat types:
Botnet, Malware, etc
Reference: HP Network Protector SDN Application Administrator Guide