How to Start Spoofing Wireshark Projects Using NS2

To start a spoofing project including Wireshark and NS2, we need to replicate a network traffic, which shows the behaviour of spoofing using NS2 and examining it to leverage Wireshark tool. Spoofing attacks focus on IP, MAC, or application-layer protocols in which an attacker mimics a legitimate user for interrupting or influencing the network traffic.

We can follow these structured instructions to get started:

Steps to Start Spoofing Wireshark Projects in NS2

  1. Understand Spoofing Attacks

Common Spoofing Types:

  1. IP Spoofing: To counterfeit the source IP address within packets for mimicking another device.
  2. MAC Spoofing: It supports to modify the MAC address of a network interface to prevent the security measures.
  3. Application-Level Spoofing: To mimic spoofing protocols such as HTTP, FTP, or DNS.

Project Goals:

  • Replicate the spoofed traffic in NS2.
  • Seizure and examine spoofed packets to utilize Wireshark.
  • Measure the spoofing’s effect on network performance.
  1. Set Up the Tools
  1. Install NS2: We can install NS2 on the system for traffic simulation:

sudo apt-get install ns2

  1. Install Wireshark: We should set up Wireshark to seize the packet and examine it:

sudo apt-get install wireshark

  1. Verify Installation: Execute ns for NS2 and wireshark for Wireshark, making sure that they are correctly installed.
  1. Define the Project Scope

Focus on the project’s objective that contains:

  • IP Spoofing: Replicate the packets including counterfeit IP addresses.
  • MAC Spoofing: Mimic spoofed MAC traffic using wireless networks.
  • Application-Level Spoofing: Replicate the spoofed FTP or HTTP traffic protocols.
  1. Create the Network Topology

Make a network topology including:

  • Legitimate Nodes: Replicate the typical network traffic.
  • Spoofing Nodes: Mimic attackers to create spoofed traffic.
  • Victim Node: The target node of the spoofing attack.
  1. Write a TCL Script

Below is an instance of TCL script to replicate IP spoofing utilizing NS2.

Example TCL Script:

# Create a new simulator instance

set ns [new Simulator]

# Open trace file

set tracefile [open spoofing.tr w]

$ns trace-all $tracefile

# Create nodes: attacker, legitimate user, and victim

set attacker [$ns node]

set user [$ns node]

set victim [$ns node]

# Define duplex links with bandwidth and delay

$ns duplex-link $attacker $victim 1Mb 10ms DropTail

$ns duplex-link $user $victim 1Mb 10ms DropTail

# Attach UDP agents for legitimate traffic

set udp_user [new Agent/UDP]

$ns attach-agent $user $udp_user

set sink_user [new Agent/Null]

$ns attach-agent $victim $sink_user

$ns connect $udp_user $sink_user

# Attach UDP agents for spoofed traffic

set udp_spoof [new Agent/UDP]

$ns attach-agent $attacker $udp_spoof

set sink_spoof [new Agent/Null]

$ns attach-agent $victim $sink_spoof

$ns connect $udp_spoof $sink_spoof

# Generate legitimate traffic

set cbr_user [new Application/Traffic/CBR]

$cbr_user attach-agent $udp_user

$cbr_user set packetSize_ 512

$cbr_user set interval_ 0.01

$ns at 0.5 “$cbr_user start”

$ns at 4.5 “$cbr_user stop”

# Generate spoofed traffic

set cbr_spoof [new Application/Traffic/CBR]

$cbr_spoof attach-agent $udp_spoof

$cbr_spoof set packetSize_ 512

$cbr_spoof set interval_ 0.02

$ns at 1.0 “$cbr_spoof start”

$ns at 3.5 “$cbr_spoof stop”

# End simulation

$ns at 5.0 “finish”

proc finish {} {

global ns tracefile

$ns flush-trace

close $tracefile

exec xterm -e “tcpdump -r spoofing.tr -w spoofing.pcap” &

exit 0

}

$ns run

  1. Run the Simulation
  1. We will need to store the simulation script like spoofing.tcl.
  2. Then, execute the simulation using NS2:

ns spoofing.tcl

  1. Capture Packets
  1. Convert Trace File to PCAP: Change the .tr trace file to a .pcap file with the support of tcpdump for Wireshark:

tcpdump -r spoofing.tr -w spoofing.pcap

  1. Open in Wireshark: Go to the .pcap file within Wireshark:

wireshark spoofing.pcap

  1. Analyze Spoofed Traffic
  1. Identify Spoofed Packets:
    • Make use of filter feature of Wireshark:

ip.src == <spoofed_ip_address>

  1. Metrics to Analyze:
    • Estimate the amount of spoofed traffic.
    • Influence over legitimate traffic for instance maximized latency or lost packets.
  2. Packet Inspection:
    • Try to find anomalies within packet headers such as mismatched IP and MAC addresses.
  1. Experiment with Advanced Scenarios
  1. MAC Spoofing: Replicate the spoofed MAC traffic in a wireless situation:

-antType Antenna/OmniAntenna \

-propType Propagation/TwoRayGround

  1. DDoS Attack: Integrate several attacker nodes are creating a spoofed traffic using DDoS attack:

set attacker2 [$ns node]

$ns duplex-link $attacker2 $victim 1Mb 10ms DropTail

  1. Mitigation Techniques: Replicate the rate limiting or filtering mitigation approaches to response spoofing:

$ns queue-limit $attacker $victim 10

  1. Document Findings

The document should be contained following features like:

  • Objectives: Replicate the behaviour of spoofing behavior.
  • Methodology: Network configuration and metrics.
  • Results: Analysis using Wireshark and NS2 on parameters like packet loss, delay.
  • Insights: Explanations on spoofing effect and mitigation efficiency.
  1. Tools for Advanced Analysis
  1. Wireshark Filters:
    • Detect certain traffic in Wireshark:

udp || tcp

    • Concentrate spoofed IP address:

ip.src == <spoofed_ip>

  1. AWK or Python: Examine the trace files for performance indicators to leverage the tools like Python or AWK for analysis.

From the demonstration you can understand how effectively it executes and simulates the Spoofing Wireshark Projects using NS2 simulation environment. If you have any doubts about this project we will support to clear that too.