pcap

Is there a way how to get an IP address of an interface in Linux using libpcap? I have found this, Get IP address of an interface on Linux , but that doesn't use pcap. Also, in the pcap examples it is said that something like this should get your IP but it gives you your network address. Using the pcap_findalldevs function: #include <pcap/pcap.h> #include <arpa/inet.h> static char errbuf[PCAP_ERRBUF_SIZE]; int main() { pcap_if_t *alldevs; int status = pcap_findalldevs(&alldevs, errbuf); if(status != 0) { printf("%s\n", errbuf); return 1; } for(pcap_if_t *d=alldevs; d!=NULL; d=d->next) { printf

I'm having an issue where by pcap_datalink() is always returning 1 . To my understanding this is LINKTYPE_ETHERNET . But, the device I am using is a wireless card and in my case en0 . This is stopping me from putting the card into monitor mode, and stopping my WLAN filters from working. I've tried to run this on both OSX and Linux with the same results. I also run as root. Here's the part of my code that's causing the problem. For the example, assume dev is set to en0 (wireless device on Mac). #include <stdio.h> #include <pcap.h> #include <stdlib.h> int main(int argc, char *argv[]) { pcap_t

I am trying to convert hping3 to hping6. hping3 uses Pcap library to receive IPv4 packets. But I need to receive IPv6 packets. That is possible. libpcap is able to catch anything on the wire. Example using ETHERTYPE_IPV6 : static u_int16_t ether_packet(u_char *args, const struct pcap_pkthdr *pkthdr, co nst u_char *p) { struct ether_header *eptr = (struct ether_header*)p; assert(pkthdr->caplen <= pkthdr->len); assert(pkthdr->caplen >= sizeof(struct ether_header)); return eptr->ether_type; } // This is the callback. assumes ethernet frame. static void pcap_callback(u_char *args,const struct pcap

Problem Statement Calling pcap_activate() results in PCAP_ERR_RFMON_NOTSUP error, i.e. RF monitor mode is not supported. Context I'm writing small C program whose job is to listen on my laptop's wifi card in monitor mode. The laptop is running Ubuntu 12.04 LTS. I ran airmon-ng start wlan0 command after which mon0 interface appeared. Following shows output of iwconfig command after running the airmon command: $ iwconfig mon0 IEEE 802.11bgn Mode:Monitor Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off eth0 no wireless extensions. lo no wireless extensions.

I'm using rdpcap function of Scapy to read a PCAP file. I also use the module described in a link to HTTP support in Scapy which is needed in my case, as I have to retrieve all the HTTP requests and responses and their related packets. I noticed that parsing a large PCAP file the rdpcap function takes too much time to read it. Is there a solution to read a pcap file faster? wonder Scapy has another method sniff which you can use to read the pcap files too: def method_filter_HTTP(pkt): #Your processing sniff(offline="your_file.pcap",prn=method_filter_HTTP,store=0) rdpcap loads the entire pcap

Closed. This question is off-topic . It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Basically I want a simple C code which illustrates capturing packet in promiscuous mode and extracts out ssid from them. Edit1 I am writing the code which I wrote to perform basic sniffing. #include <stdio.h> #include <pcap.h> int main(int argc, char *argv[]){ pcap_t *handle; struct pcap_pkthdr header; const u_char *packet; int i; char *dev, errbuf[PCAP_ERRBUF_SIZE]; // dev = pcap_lookupdev(errbuf); dev = argv[1

I want to write a small application using Libpcap in C on Linux. Currently, it starts to sniff and wait for the packets. But that's not what I need actually. I want it to wait for N seconds and then stop listening. How can I achieve that? Here is my code: void got_packet(u_char *args, const struct pcap_pkthdr *header, const u_char *packet) { printf("got packet\n); } int main() { int ret = 0; char *dev = NULL; /* capture device name */ char errbuf[PCAP_ERRBUF_SIZE]; /* error buffer */ pcap_t *handle; /* packet capture handle */ char filter_exp[] = "udp dst port 1500"; /* filter expression */

I have captured three different stream as pcap file with meta datas. How can I stream back to RTP/RTCP stream? If I understand correctly, you have the pcaps, but you want to get the RTP from them? Wireshark UI You could use Wireshark's UI to easily take the RTP from the pcap via the Menu: Telephony/RTP/ then show all streams... click a stream it lists, and then 'analyize.' However, if you want to automate this, and avoid the UI... you can use tshark. I found several tutorials online and used them to build a test harness that automatically rebuilds the audio/rtp on a pcap, then makes a wav and