To simulate a spoofing attack in NS2 and evaluating it with Wireshark is a difficult feasible task. The main aim is to replicate a network in which one or more malicious nodes (attackers) adjust their identity (IP or MAC address) to introduce a spoofing attack and then capture and evaluate this attack using Wireshark.
Here’s a step-by-step guide on how to simulate a spoofing attack in NS2 and evaluted it with Wireshark:
Steps to Simulate Spoofing Wireshark Projects in NS2
Step 1: Set Up NS2 and Wireshark
- Making sure that we have NS2 installed on the system.
- Install Wireshark for packet capture and measured if it’s not already installed. We can download it from Wireshark’s official website.
Step 2: Understand the Spoofing Attack
A spoofing attack happens when an attacker mimics another legitimate device by forging its identity, that usually by altering its IP or MAC address. The attacker can:
- Transmit packets that make up to be from a various IP or MAC address.
- Interrupt and manipulate network traffic.
Step 3: Define the Spoofing Scenario in NS2
In NS2, we can mimic a spoofing attack by having one or more nodes modification their IP addresses or MAC addresses and transmit malicious packets to a target. The target node will reflect the packets are approaching from a legitimate node, while they’re essentially coming from the attacker.
Example of a Spoofing Scenario in NS2:
- Multiple nodes that contain attackers and legitimate clients are associated to a target server.
- The attacker transmits packets by spoofing the IP address of another node.
- The target is unable to differentiate the spoofed packets from legitimate ones.
Step 4: Create the NS2 Simulation Script
Here is an instance of an NS2 TCL script that replicates IP spoofing:
# Create a new simulator object
set ns [new Simulator]
# Define nodes
set n1 [$ns node] ;# Legitimate client 1
set n2 [$ns node] ;# Legitimate client 2
set n3 [$ns node] ;# Attacker (spoofing node)
set server [$ns node] ;# Target server
# Define links between nodes
$ns duplex-link $n1 $server 1Mb 10ms DropTail
$ns duplex-link $n2 $server 1Mb 10ms DropTail
$ns duplex-link $n3 $server 1Mb 10ms DropTail
# Set up UDP agents for legitimate clients
set udp1 [new Agent/UDP]
$ns attach-agent $n1 $udp1
set udp2 [new Agent/UDP]
$ns attach-agent $n2 $udp2
# Set up the malicious node (attacker) with a spoofed IP address
set udp3 [new Agent/UDP]
$udp3 set addr_ $n1 ;# Spoof the IP address of legitimate client 1
$ns attach-agent $n3 $udp3
# Create traffic sources for legitimate clients
set cbr1 [new Application/Traffic/CBR]
$cbr1 set packetSize_ 1000
$cbr1 set interval_ 0.5
$cbr1 attach-agent $udp1
set cbr2 [new Application/Traffic/CBR]
$cbr2 set packetSize_ 1000
$cbr2 set interval_ 0.5
$cbr2 attach-agent $udp2
# Create a malicious traffic source for the attacker (spoofed traffic)
set cbr3 [new Application/Traffic/CBR]
$cbr3 set packetSize_ 1000
$cbr3 set interval_ 0.1 ;# High rate to simulate the attack
$cbr3 attach-agent $udp3
# Attach a traffic sink to the server to receive packets
set sink [new Agent/Null]
$ns attach-agent $server $sink
# Connect traffic sources to the server
$ns connect $udp1 $sink
$ns connect $udp2 $sink
$ns connect $udp3 $sink
# Schedule when traffic starts and ends
$ns at 1.0 “$cbr1 start”
$ns at 1.0 “$cbr2 start”
$ns at 1.5 “$cbr3 start” ;# Spoofing attack starts later
$ns at 4.0 “$cbr1 stop”
$ns at 4.0 “$cbr2 stop”
$ns at 4.0 “$cbr3 stop”
# Setup tracing
set tracefile [open spoofing-trace.tr w]
$ns trace-all $tracefile
# Finish procedure
proc finish {} {
global ns tracefile
$ns flush-trace
close $tracefile
exec nam spoofing.nam &
exit 0
}
# Set the finish time
$ns at 5.0 “finish”
# Run the simulation
$ns run
Step 5: Run the Simulation
- Save the TCL script as spoofing_simulation.tcl.
- Execute the script in NS2:
ns spoofing_simulation.tcl
This will create two files:
- spoofing-trace.tr: The trace file encompassing packet information.
- spoofing.nam: The NAM (Network Animator) files for envisioning the network simulation.
Step 6: Analyse the Simulation with Wireshark
- Convert the Trace File to a PCAP File: To evaluate the trace file with Wireshark, transform it into a format Wireshark can read (PCAP). We can compose a basic script or utilize a tool to convert the NS2 trace file into a PCAP format.
- Install Trace Converter (Optional): If essential, utilize a tool such as Trace2Pcap to convert the NS2 trace file into PCAP format:
- Install and execute Trace2Pcap on the trace file.
- Save the output in PCAP format.
- Open the PCAP File in Wireshark: Once the trace is transformed to PCAP, open it in Wireshark:
- Introduce Wireshark.
- Open the created PCAP file.
- Utilize Wireshark’s filters to learn spoofed packets. We can strain according to IP addresses or examine the source and destination addresses to classify spoofing behaviour. Example filters:
ip.src == [spoofed IP address]
ip.dst == [target server IP address]
- Analyse Packet Details:
- Seek for inconsistencies in source IP addresses and the original sender.
- Measure on packet payloads and identify abnormal traffic patterns created by the spoofed attacker.
Step 7: Visualize the Attack in NAM
We can also envision the attack in NAM to see how the attacker creates traffic using the spoofed characteristics:
nam spoofing.nam
NAM enables you to monitor the flow of packets and how the spoofed traffic impacts the target.
Step 8: Evaluate the Impact
- Learn the impact of the spoofing attack on the appropriate traffic.
- Evaluate on how the spoofed packets reduce the performance of the target server.
- We can optimize the simulation by incorporates defence mechanisms like filtering or firewalls and validates their efficiency.
Enhancements:
- Spoof MAC Addresses: We can expand the replicating by spoofing MAC addresses instead of IP addresses, liable on the layer of the attack that need to replicated.
- Network Defences: Apply network defence approaches such as Intrusion Detection Systems (IDS), firewalls, or rate-limiting in the NS2 simulation to learn on how they respond the spoofing attack.
With this configuration, we can exhaustively make you understand the implementation steps of offered example regarding spoofing attack using ns2 simulator tools. For further queries regarding this manual, we will resolve it over another manual. Our experts effectively simulate Spoofing Wireshark Projects Using NS2 tool, phdprime.com team can work effectively on IP or MAC address related to your projects . If you need specialized support, please visit phdprime.com, where our team of experts is ready to assist you. Get project performance report from us.
