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자신의 Network에 필터를 적용하여 패킷 캡쳐 //pc_netfilter.c#include "core_ehp.h" void catch_handler(u_char *args,cp_pkthdr *handle,cu_char *packet);void decode_eth(cu_char *base);int decode_ip(cu_char *base);int decode_tcp(cu_char *base);void decode_data(cu_char *packet,u_int len);void view_ether_addr(const char *pre,cu_char *base); int main(int argc,char **argv){ cu_char *packet; char errbuf[PCAP_ERRBUF_SIZE]..

자신의 Network IP와 Mask값 확인하기 소스 int pcap_lookupnet(const char *devname, bpf_u_int32 *pnet, bpf_u_int32 *pmask, char *ebuf); //pc_lookup.c#include int main() { char *dev; char errbuf[PCAP_ERRBUF_SIZE]; bpf_u_int32 net_ip; bpf_u_int32 mask; struct in_addr net_addr, mask_addr; if(!(dev = pcap_lookupdev(errbuf))) { printf("%s\n",errbuf); return 1; }//if if(pcap_lookupnet(dev, &net_ip, &mask, errbuf) <..