JPCAP SNIFFER PDF

By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have to create a program that sniff a local network for school. I chose to work with Java and found out that you can capture packets with jpcap. So I wanted to follow one of the example provided in jpcap's github and it seems like I can only find my own packets. Like I said, I've looked at the code and chose my wifi interface.

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By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have to create a program that sniff a local network for school. I chose to work with Java and found out that you can capture packets with jpcap.

So I wanted to follow one of the example provided in jpcap's github and it seems like I can only find my own packets. Like I said, I've looked at the code and chose my wifi interface. The program is capturing packets and I put all the source ip addresses in a text file to run some tests. I have also created a hashmap the ip addresses I've finded when I did a arp -a.

From what I've read online, this command shows you ip addresses in your network. I created a boolean set to false and I then proceeded to run a loop that goes through the textfile and looked if the ip address was in the hashMap : if one of the addresses appeared in the hashmap, the boolean would be change to true and it would mean that I've managed to catch something.

After running the test, the boolean came out false. The reason why you aren't able to capture more packets is because you need an interface in promisc or raw mode, I advice you to use a proper sniffer like wireshark to check if other packets that aren't addressed to you can be captured. If not, means you need apply a mitm method because you are in a commuted network. For use that code on wifi should be enough an interface in monitor mode check aircrack-ng suite.

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Packet sniffer using jpcap

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I just installed JPcap on windows and now i want to start caturing packets. There is an example there by the name of Sniffer, which i presume is the code for capturing the packets, but its not working when i run it. Do you have any idea what this is? Plus it would be helpful if someone could provide me the code for sniffing packets. It worked just fine, but i dont know how to get packets using this sourceforge version. Please help, thanks! PacketCapture: loading native library jpcap..

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