Quality of Service
Some network traffic, like voice streams and real time data for applications like Citrix, is very sensitive to delay (latency).
Organizations need to be able to prioritize such traffic inside their network and to label this traffic so that external network nodes can handle it correctly as well.
With StoneGate you can use the QoS classes for prioritizing the traffic. To provide end-to-end QoS, it is not enough that bandwidth management and prioritizing is done in the StoneGate firewall. The classification information should also be relayed to the other devices between the end points, so that they can handle it properly.
That is why StoneGate also provides you with the possibility of marking the outgoing packets with the DSCP (Differentiated Services Codepoint) field.