tshark

问题 I'm trying to merge numerous pcap files together for post-processing after capture, however, I need to retain information about the source file of each packet (the file name contains information about the network tap source). This information isn't available anywhere in the packets themselves. My idea is to use the convenience of pcapng which allows adding a frame comment (frame.comment) to a packet and which can be done programmatically using editcap. I could use this to add information from

问题 I am trying to programmatically capture a stream of packets by using Tshark . The simplified terminal command I am using is: tshark -i 2 -w output.pcap This is pretty straightforward, but I then need to get a .csv file in order to easily analyze the information captured. By opening the .pcap file in Wireshark and exporting it in .csv what I get is a file structured as follows: "No.","Time","Source","Destination","Protocol","Length","Info" but,again, I need to do this in an automatic way. So I

问题 What is the correct BPF filter for only recieving packets where the source MAC address is equal to the transmission MAC address? Looking at the documentation, it seems like the fields should be available through either wlan[21:12] or wlan.addr2 but I'm unable to get those to work. 回答1: According to the pcap-filter manpage, capture filters for tshark or Wireshark don't support comparing packet fields against each other . You can, however, do that with the display filter (top bar in Wireshark,

问题 I'm analyzing VoIP calls on my network For now i'm using a generated .pcap file, but later i'll be listening for this at real time. I'm using tshark, and i can filter some important data pretty easily from the .pcap (like "source ip address and port", "destination ip addr and Port", payload pckt lost, Max Delta(ms),Max Jitter(ms),Mean Jitter(ms)) with tshark -r myfile -q -z rtp,streams What i want to know is: how can i get the sip addrs of a call? (client and server) I can retrieve some sip

问题 ADDENDUM: The problem in the question below is due to the SECOND command. When I comment out the second statement, the first one runs as expected and produces expected results. :s I needed to run two terminal commands from PHP SIMULTANEOUSLY, and nothing was solving my problem (as you can see here and here, if you want to). The first command is supposed to run Tshark for 5 seconds and capture network traffic (packets). The second command was supposed to generate some network packets and send

问题 in my application i am open Tshark process and start capturing, when i want to finish to capturing i am kill the Tshark process so sometimes the capture file is corrupted and when i am trying to open this file i received the error the capture file appears to have been cut short in the middle of a packet - how to prevent this error there is a batter way to close the Tshark process to avoid this error ? 回答1: Try stopping the capture process with ctrl+c instead of killing the process. Also, you

问题 I'm trying to capture the standard output from tshark through a program in C. For that, I use popen() call to open tshark process and read from the returned FILE stream. Code sample: #include <stdio.h> #include <stdlib.h> int main() { FILE* pipe_fd = popen("tshark -i eth0 -R icmp -2 -T fields -e icmp.checksum -e icmp.seq", "r"); //FILE* pipe_fd = popen("lsof", "r"); if (!pipe_fd) { fprintf(stderr, "popen failed.\n"); return EXIT_FAILURE; } char buffer[2048]; while (NULL != fgets(buffer,

问题 I was wondering if anyone around here might know what causes this issue. I keep getting this error on OSX High Sierra, while running a python script which uses the pyshark library. I am running Tshark 2.6.2 Python 3.7.0 PyShark 0.4.1 The error: /usr/local/lib/python3.7/site-packages/pyshark-0.4.1-py3.7.egg/pyshark/capture/capture.py:230: RuntimeWarning: coroutine 'wait_for' was never awaited self.eventloop.run_until_complete(self._cleanup_subprocess(tshark_process)) /usr/local/lib/python3.7

问题 The option -Y , -2 and -R in tshark confuse me a long time. After I read the manual, I know that -Y is used in single-pass filter and -2 in 2-pass filter (in case where we can not get some info until 1st pass filter is over) But I still can not understand what is the difference between -2 -Y 'blabla' and -2 -R 'balabala' and -2 -Y 'blalal' -R 'blala' And I also did an experiment that drive me crazy: tshark -n -r test.pcap -2 -R 'frame.number > 0' 1 0.000000 10.140.28.17 -> 10.74.68.58 TCP 80

问题 how to apply filter on an existing .cap file ? so i have a .cap file and want to filter out one particular IP , what is the command for that . I am using wireshark . Thanks 回答1: ip.addr == 127.15.16.13 Sometimes you may need ip.src == ..... or ip.dst == ... After that you may save filtered packets by selecting File->Save As->Packet Range->Displayed 来源： https://stackoverflow.com/questions/11671742/ip-filter-on-cap-file