jNetPcap is an open-source Java wrapper for nearly all libpcap library native calls.
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Questions tagged [jnetpcap]
129 questions
0
votes
1 answer
get website name from packet using Jnetpcap
I've asked this to Jnetpcap forum. And didn't get any response.
I've been trying to get the website name from the request/ response packet.
This is what I've tried:
PcapPacketHandler jpacketHandler = new PcapPacketHandler() {
…
user2112371
- 31
- 2
- 10
0
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1 answer
"error reading dump file: Permission denied" Jnetpcap API on windows
I'm using Jnetpcap 1.3.0 version for extracting the pcap file.
Below is my code snippet
/* Main Class */
public class Proceed{
public static void main(String[] args) {
PCapFile pcapFile = new PCapFile("C:/test/no-gre-sample.pcap");
…
user102964
- 21
- 3
0
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1 answer
Java = Building packets from scratch with Jnetpcap
I'm trying to build a packet using jnetpcap, according to the packets I receive.
I'm currently using jnetpcap-1.4.r1425, and am running into several problems.
The following code is common to all my problems:
JPacket wPacket = new…
Cong Hui
- 202
- 5
- 16
0
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2 answers
NoClassDefFoundError with classpath
I'm attempting to run a program using the command:
java Honey -cp ../../jnetpcap-1.3.0/jnetpcap.jar
and am getting the title error:
Exception in thread "main" java.lang.NoClassDefFoundError: org/jnetpcap/Pcap
at…
Cong Hui
- 202
- 5
- 16
0
votes
1 answer
jnetpcap to capture HTTPS traffic
I am developing a simple Sniffer system for the first time using jnetpcap. I adapted some codes and I can currently read HTTP traffic (port 80) and print its fields.
private void packetHandler(){
jpacketHandler = new PcapPacketHandler()…
Marcos Valle
- 77
- 2
- 11
0
votes
2 answers
jnetpcap: can't create PcapPacket using byte array on ubuntu
I'm trying to run this code which just take a HexString of bytes transform it to a byte array and try to create a PcapPacket from this array:
import org.jnetpcap.packet.PcapPacket;
public class PcapTest {
public static void main(String[] args)…
user1928596
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1 answer
Jnetpcap Payload modify in UDP packet
i would modify the content of Data in the UDP Packet read from a pcap file and send it on the network.
In the following example i write a string "User data" and it work correctly but if my data require more space than the previous payload opened, i…
franktiello
- 55
- 4
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0 answers
Jnetpcap UDP Recalculate Checksum
i'm trying to recalculate UDP Checksum on a packet where i changed IPD destination, but the function udp checksum seems to doesn't accept any parameter,i'm using jnetpcap 1.4
Pcap pcap_off = Pcap.openOffline(fileName, errorBuf); //open…
franktiello
- 55
- 4
0
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0 answers
tomcat on ubuntu jnetpcap native library *.so unable to load
I want to deploy my application on to tomcat which has a pcap parsing ability. The module was running fine on eclipse / terminal. On tomcat i see the error as below.
I have tried the following steps to resolve this issue:
Add jnetpcap.jar and *.so…
Raghuveer
- 2,859
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1 answer
Tomcat: java.lang.UnsatisfiedLinkError: no jnetpcap in java.library.path
I'm getting the following error when deploying my application to Tomcat:
I have added the jnetpcap jar file to the lib folder of Tomcat. I have also added it to my classpath in eclipse.
I am deploying my application as a WAR file built using…
C_B
- 2,620
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0
votes
1 answer
Decoding ARP packets using jnetpcap library
The following error occured while trying to read packets using jnetpcap library. What could be the reason ?
ERROR actor.OneForOneStrategy: org.jnetpcap.protocol.network.Ip4java.io.NotSerializableException: org.jnetpcap.protocol.network.Ip4
at…
user3823859
- 469
- 1
- 7
- 20
0
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1 answer
jNetPcap Packet discard if coming from specific IP address
I am trying to filter the packet and discard if expression matches the situation. I mean to say that If packet is coming from 192.168.1.100, It should not get deliver to the destination(which is 192.168.1.119).
PcapBpfProgram program = new…
0
votes
1 answer
issue with tcp reassembly
I am getting packet segments in two parts.I am able to see it in wireshark as tcp reassembled.After searching on google i found out about dont fragment bit set for fragmented data.but it is not set even for fragmented data.i am using java jnetpcap…
saifjunaid
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0
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1 answer
Java jnetpcap IndexOutOfBoundsEcxeption payload
if (packet.hasHeader(ip)) {
String str = FormatUtils.ip(ip.source());
if (packet.hasHeader(Payload.ID)) {
try{
payload = packet.getHeader(new Payload());
}
catch(Exception…
Kostas
- 1
0
votes
1 answer
Encoding and Decoding of Pcap Packets
I need to convert packets to byte format and decode it . How is it possible to convert packets captured using jnetpcap library to array[bytes] and vice-versa in Java?
user3823859
- 469
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