The disadvantage of UTM is that only basic fiewall functions can be enabled in practice. If other security functions
are enabled, the performance deteriorates substantially. Teams using the UTM must compromise between security
and performance, and most customers enable only access control to avoid performance loss. Application threats
are pervasive, and defense functions, such as Intrusion Prevention System (IPS) and antivirus (AV), are a must, not an
option. The NGFW must have security defense capabilities and high performance at the same time. In the Gartner
defiition, NGFWs should meet large enterprise requirements. In a 10G level network, even if all security functions
are enabled, the NGFW must be able to provide high performance.