In the Check Point Firewall Kernel Module, each Kernel is associated with a key, which...

 For Stateful Mode configuration, chain modules marked with 2 will not apply. Stateful Mode configuration is a feature that allows administrators to define how packets are processed by different firewall kernel modules in inbound and outbound directions. Chain modules are firewall kernel modules that perform various security functions, such as VPN, IPS, QoS, etc. Each chain module is associated with a key, which specifies the type of traffic applicable to the chain module. The key can be one of the following values: 0 for all packets, 1 for stateful packets, 2 for stateless packets, and 3 for no match packets. For Stateful Mode configuration, only chain modules with key 0 or 1 will apply, as they handle all packets or stateful packets. Chain modules with key 2 will not apply, as they handle stateless packets, which are not relevant for Stateful Mode configuration.