Fastnetmon allows you to create groups of IP Addresses or Networks, called hostgroups, which allow you to manage different levels of thresholds to detect an attack.

With the enable_total_hostgroup_counters activated, it will be possible to measure the traffic for each hostgroup and in turn, have thresholds of thresholds.

This modality is the one used by FNM Manager to organise the clusters and are given the name of Customers