This INTEGER is the number of outbound connections currently being tracked and shaped by FloodGate-1 on this interface. As the outbound counterpart to fgNumConnIn, an unusually high value here relative to the interface's normal baseline could indicate internal hosts opening excessive outbound sessions, a pattern sometimes associated with malware beaconing or a misbehaving application. Sustained outbound connection counts far above historical norms on a server-facing interface would be worth correlating with endpoint security logs.