void nf_setIPEventHandler(NF_IPEventHandler * pHandler)
The function can be called after nf_init for filtering IP packets. The IP events are indicated when NF_FILTER_AS_IP_PACKETS flag is specified in rule filteringFlag field.
If NF_READONLY flag is also specified in the same rule, the packets are indicated only for monitoring in read only mode. In this case NFIF_READONLY flag is set in flags variable of NF_IP_PACKET_OPTIONS structure for the appropriate packets, and they are ignored by nf_ipPostSend/nf_ipPostReceive methods.
Note that IP filter bypasses loopback traffic. It indicates only communications with remote hosts.
IP filtering is supported only with WFP driver.