How to Start Intrusion Attacks Projects Using NS2

To stimulate an Intrusion Attack project using NS2 (Network Simulator 2) has contain the replicate of malicious behaviors which disrupt the normal operation for the network. Here’s a comprehensive guide to help you design and implement such projects:

Step to Start Intrusion Attacks Projects Using NS2

  1. Understand Intrusion Attacks
  • Intrusion Attacks which target mention the unauthorized movements in a network:
    • Interrupt communication.
    • Steal or modify data.
    • Consume the network resources.
  • Types of Intrusion Attacks you can simulate:
    • Denial of Service (DoS): Flooding a network by packets.
    • Man-in-the-Middle (MITM): Overhearing and changing the transmission.
    • Blackhole Attack: Stopping the all received packets.
    • Wormhole Attack: Building a fake route among nodes.
    • Sybil Attack: Spoofing for several characteristics in the network.
  1. Set up NS2
  • Install NS2: Monitor the NS2 Installation Guide.
  • Validate the installation by a simple replication of TCL script:

ns example.tcl

  • Familiarize through NS2’s directory architecture and main files for instance routing protocols in /ns-2.35/.
  1. Design the Attack
  • Select the kind of attack and aim the protocol or layer:
    • Network Layer: Blackhole, Wormhole.
    • MAC Layer: Jamming or collision.
    • Application Layer: Packet flooding or spoofing.
  1. Modify Protocol Code

Maximum intrusion attacks are need the changing a source code for the protocol for sample AODV, DSR).

Step 4.1: Duplicate and Modify Protocol Files

  • Navigate the protocol for directory for instance /ns-2.35/aodv.
  • Protocol the fake files are build a custom version:

cp aodv.cc aodv_intrusion.cc

cp aodv.h aodv_intrusion.h

Step 4.2: Implement the Intrusion Logic

  • Start the protocol source file such as aodv_intrusion.cc and alter the behavior:
    • Blackhole Attack: Stop the packets are the malicious node.

void AODV::recvRequest(Packet *p) {

// Drop all incoming packets

Packet::free(p);

}

    • Flooding Attack: propagation a large number of copy packets.

void AODV::sendFakePackets() {

for (int i = 0; i < 1000; i++) {

Packet *p = Packet::alloc();

hdr_ip *iph = hdr_ip::access(p);

iph->saddr() = index;

iph->daddr() = IP_BROADCAST;

Scheduler::instance().schedule(target_, p, 0.01);

}

}

Step 4.3: Update the Makefile

  • Enhance the custom protocol files for Makefile in the NS2 directory:

cd ns-2.35

gedit Makefile

  • Increase the aodv_intrusion.o for the OBJ_CC list.

Step 4.4: Rebuild NS2

  • Recompile the tool NS2 for contain the custom protocol:

make clean

make

  1. Create the Simulation Script

Write a TCL script for replicate the intrusion attack.

Step 5.1: Define Network Topology

Configure the nodes and their connections:

set ns [new Simulator]

set tracefile [open trace.tr w]

$ns trace-all $tracefile

# Create nodes

set n0 [$ns node]

set n1 [$ns node]

set attacker [$ns node]

Step 5.2: Configure the Protocol and Attack

Allocate the malicious protocol for the attacker node:

$ns at 10.0 “$attacker start-intrusion”

Step 5.3: Generate Traffic

It replicates the communication among normal nodes:

set udp [new Agent/UDP]

$ns attach-agent $n0 $udp

set sink [new Agent/Null]

$ns attach-agent $n1 $sink

$ns connect $udp $sink

set cbr [new Application/Traffic/CBR]

$cbr attach-agent $udp

$cbr set packetSize_ 512

$cbr set rate_ 100kb

$ns at 5.0 “$cbr start”

Step 5.4: Run the Simulation

  • Store the TCL script and process for the replciation:

ns intrusion_attack.tcl

  1. Analyze Results
  • Trace File Analysis:
    • Observe the created trace.tr file for metrics such as Packet Delivery Ratio (PDR), throughput, and delay.
    • Use the tool AWK scripts for examine automate.
  • Visualization:
    • Use NAM (Network Animator) tool for envision behavior during the attack.
  1. Validate and Mitigate
  • Validate the countermeasures like as:
    • Intrusion Detection Systems (IDS): Track and classify the malicious activity.
    • Trust Models: Validate the nodes among their transmission.
    • Route Verification: Prove the authenticity for route requests.
  1. Document the Project

Include:

  • It starts with the problem statement and objectives.
  • Then examine the objectives for attack description.
  • After the gives a performance of Simulation setup and configuration.
  • It delivers the outcomes and analysis.
  • Finally it contributes the conclusions and references for countermeasures.

In this page, we collects the novel information about the instruction attack that has execution procedure, key components explanation were provided to executed in ns2 tool. Any queries related to this project will be clarified in a different manual.