Questions tagged [gopacket]
46 questions
1
vote
1 answer
Learning Golang using gopacket as a starter
I have started to learn golang recently (January). I am trying to reproduce a tool we have internally that is written in Python in Go.
So I have the tool working completely for UDP decoding of DNS, however I have been struggling for a week trying…
user4216666
0
votes
1 answer
Error 802.11 packet sniffing on Windows - gopacket
This is the code:
package main
import (
"fmt"
"github.com/google/gopacket"
"github.com/google/gopacket/pcap"
)
func main() {
handle, err := pcap.OpenLive("\\Device\\NPF_{d6194530-0e27-4c84-b489-2cfe18d4af24}", 65536, true,…
ANDRVV
- 7
- 5
0
votes
1 answer
create packetSource of gopacket with s3 file
when I get a pcap file from s3 client, I need to generate a packetSource of gopacket to read packets in it. But I only found OpenOfflineFile function in gopacket document, how could I do to generate packetSource with []byte(which is read from s3…
Qingxiao Lin
- 1
- 3
0
votes
2 answers
With gopacket inactive handle, SetPromisc is not setting the interfaces in PROMISC mode
With gopacket inactive handle, SetPromisc is not setting the interfaces in PROMISC mode if
/sys/devices/virtual/net/bond1/flags
has value 0x1403. It only works if this value is set to 0x1503. Is there a way I could set interfaces to PROMISC mode…
HSAR
- 139
- 1
- 2
- 12
0
votes
1 answer
Unable to use gopacket to snoop on connected socket
I'm trying to use gopacket to snoop on a socket and print tcp packet payloads. If I start the snooper app first and then connect a tcp socket, things work correctly. If the socket is already connected when the snooper app starts, nothing is…
sv650
- 1
- 2
0
votes
0 answers
gopacket fast layers parsing
Im trying to fast parse packet layers using the following offical example https://youtu.be/APDnbmTKjgM?t=1135
var ip4 layers.IPv4
var tcp layers.TCP
var udp layers.UDP
var sip layers.SIP
parser :=…
kostya
- 27
- 7
0
votes
0 answers
Create a packet from raw bytes and write to pcap using gopacket
I created a packet from raw bytes using gopacket and write these packets to a pcap file.
I created a UDP packet from raw bytes as below.
package main
import (
"fmt"
"net"
"log"
"os"
"time"
…
mmeda
- 11
- 4
0
votes
1 answer
Create a packet from raw bytes and write to pcap file using gopacket
I want to create a packet from raw bytes using gopacket and write the packets to a pcap file.
I created a UDP packet from raw bytes as below.
package main
import (
"fmt"
"net"
"log"
"os"
"time"
…
mmeda
- 11
- 4
0
votes
0 answers
Sending Spoofed UDP Packets over VPN
I have a machine (server) on which I am running IP spoofing tests. All the ports are open on the server and it is on a VPN Network to which I am connected.
The problem is, when I try to send data to the machine on UDP simply using netcat, it…
Sandesh Bhusal
- 31
- 2
0
votes
2 answers
How to correctly handcraft DNS packets with gopacket?
I'm trying to send hand-crafted DNS packets with gopacket.
Here is my code:
package main
import (
"net"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/google/gopacket/pcap"
)
func main() {
handle,…
hacb
- 175
- 2
- 10
0
votes
1 answer
How to pick up IP packets and inject on different VM and interface
I have been trying to solve these 2 problems, but without success.
I wonder if it's possible to remove specific packets from an interface with Gopacket or is it just for listening on the wire? For example when I send a UDP packet to a wrong port…
Aleksandaarrr
- 1
- 1
0
votes
1 answer
Golang Converting gopacket udpLayer to bytes and sending
I am using the gopacket/layers api to extract upd data out of a packet then sending it again via another udp stream, I am not sure if am doing this correct or not, also have been getting some errors, if anyone can point me in the correct direction…
octain
- 964
- 3
- 10
- 24
0
votes
1 answer
NTP detection using golang, payload coming up empty
I'm working on detecting NTP using golang and the gopacket package. I'm using a pcap I downloaded from wireshark. I've got the following code for opening PCAPs and handling them :
func (d *DPI) readPCAP(pcapFile string) (*pcap.Handle, error) {
…
Anirudh Singh
- 31
- 2
0
votes
2 answers
Sending UDP packets with gopacket
I am trying to send UDP packets to a remote host like this
conn, err := net.ListenPacket("ip4:udp", "0.0.0.0")
if err != nil {
panic(err)
}
ip := &layers.IPv4{
SrcIP: saddr,
DstIP: dip,
Protocol: layers.IPProtocolUDP,
}
udp :=…
ACC
- 2,488
- 6
- 35
- 61
0
votes
0 answers
Changing the IP address of a Gopacket and re-transmitting using raw sockets
I'm writing a program that reads all packets passing through the computer running it. I wish to grab a packet (either by dst ip or src ip), then change the dstIP and TCP dstPort and put it back on the wire.
I have no problems with changing the…
Jonathan Eustace
- 2,469
- 12
- 31
- 54