How to Implement Network Penetration testing in ns3

To implementing network penetration testing in ns3 contains an introduction of a network simulation wherever we can test several security aspects, like defences, vulnerabilities, and exploits. We are providing this procedure will cover scheduling basic network, generating traffic, and simulating penetration testing scenarios like port packer sniffing, denial of service (DoS) attacks, and scanning.

Step-by-Step implementation:

Step 1: Setup ns3 Environment

Make certain ns3 is installed and set up on the system.

Step 2: Include Necessary Modules

Embrace the necessary ns3 modules in the script:

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/point-to-point-module.h”

#include “ns3/applications-module.h”

Step 3: Create the Simulation Script

1. Setup Nodes and Network:

using namespace ns3;

NS_LOG_COMPONENT_DEFINE (“PenetrationTesting”);

void ReceivePacket (Ptr<Socket> socket)

{

Ptr<Packet> packet;

Address from;

while ((packet = socket->RecvFrom (from)))

{

NS_LOG_UNCOND (“Received one packet!”);

}

}

 

void SendPacket (Ptr<Socket> socket, uint32_t packetSize, uint32_t numPackets, Time pktInterval)

{

if (numPackets > 0)

{

socket->Send (Create<Packet> (packetSize));

Simulator::Schedule (pktInterval, &SendPacket, socket, packetSize, numPackets – 1, pktInterval);

}

else

{

socket->Close ();

}

}

int main (int argc, char *argv[])

{

CommandLine cmd;

cmd.Parse (argc, argv);

// Create nodes

NodeContainer nodes;

nodes.Create (3);

// Create point-to-point links

PointToPointHelper pointToPoint;

pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“5Mbps”));

pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));

NetDeviceContainer devices;

devices = pointToPoint.Install (nodes.Get (0), nodes.Get (1));

devices = pointToPoint.Install (nodes.Get (1), nodes.Get (2));

// Install Internet stack

InternetStackHelper stack;

stack.Install (nodes);

// Assign IP addresses

Ipv4AddressHelper address;

address.SetBase (“10.1.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = address.Assign (devices);

// Set up applications

uint16_t port = 9;  // Discard port (RFC 863)

// Server application on node 2

Address serverAddress (InetSocketAddress (Ipv4Address::GetAny (), port));

PacketSinkHelper packetSinkHelper (“ns3::UdpSocketFactory”, serverAddress);

ApplicationContainer sinkApps = packetSinkHelper.Install (nodes.Get (2));

sinkApps.Start (Seconds (1.0));

sinkApps.Stop (Seconds (10.0));

// Client application on node 0

Ptr<Socket> ns3UdpSocket = Socket::CreateSocket (nodes.Get (0), UdpSocketFactory::GetTypeId ());

Address remoteAddress (InetSocketAddress (interfaces.GetAddress (2), port));

ns3UdpSocket->Connect (remoteAddress);

// Simulate packet sending

Simulator::ScheduleWithContext (ns3UdpSocket->GetNode ()->GetId (), Seconds (2.0), &SendPacket, ns3UdpSocket, 1024, 100, Seconds (1.0));

// Set up a basic UDP echo server and client on node 1 (penetration tester)

UdpEchoServerHelper echoServer (port);

ApplicationContainer serverApps = echoServer.Install (nodes.Get (1));

serverApps.Start (Seconds (1.0));

serverApps.Stop (Seconds (10.0));

UdpEchoClientHelper echoClient (interfaces.GetAddress (1), port);

echoClient.SetAttribute (“MaxPackets”, UintegerValue (100));

echoClient.SetAttribute (“Interval”, TimeValue (Seconds (1.0)));

echoClient.SetAttribute (“PacketSize”, UintegerValue (1024));

ApplicationContainer clientApps = echoClient.Install (nodes.Get (0));

clientApps.Start (Seconds (2.0));

clientApps.Stop (Seconds (10.0));

// Simulate a basic port scan from node 1 to node 2

for (uint16_t p = 1; p <= 1024; ++p)

{

Ptr<Socket> scanSocket = Socket::CreateSocket (nodes.Get (1), TcpSocketFactory::GetTypeId ());

Address scanAddress (InetSocketAddress (interfaces.GetAddress (2), p));

scanSocket->Connect (scanAddress);

Simulator::Schedule (Seconds (2.0 + 0.01 * p), &ReceivePacket, scanSocket);

}

Simulator::Stop (Seconds (10.0));

Simulator::Run ();

Simulator::Destroy ();

return 0;

}

Step 4: Run the Simulation

To compile and run a simulation script:

./waf configure

./waf build

./waf –run PenetrationTesting

Explanation

• Node Creation: To create a nodes on behalf of various devices in the network.
• Point-to-Point Links: To construct point-to-point links among nodes.
• Internet Stack: Connect the Internet load on all nodes.
• IP Configuration: Allocate IP addresses toward the nodes.
• Applications: Set up a UDP echo server and client, to pretend a basic UDP communication.
• Penetration Testing: From one node to another by attempting to connect to several ports to simulate a basic port scan

Advanced Penetration Testing Techniques

1. Denial of Service (DoS) Attack:

To overcome the server to simulate a DoS attack by sending a large number of packets.

void DoSAttack (Ptr<Socket> socket, uint32_t packetSize, uint32_t numPackets, Time pktInterval)

{

if (numPackets > 0)

{

socket->Send (Create<Packet> (packetSize));

Simulator::Schedule (pktInterval, &DoSAttack, socket, packetSize, numPackets – 1, pktInterval);

}

else

{

socket->Close ();

}

}

// In main function

Ptr<Socket> dosSocket = Socket::CreateSocket (nodes.Get (0), UdpSocketFactory::GetTypeId ());

Address dosAddress (InetSocketAddress (interfaces.GetAddress (2), port));

dosSocket->Connect (dosAddress);

Simulator::Schedule (Seconds (3.0), &DoSAttack, dosSocket, 1024, 1000, Seconds (0.01));

1. Packet Sniffing:

To confine and analyze packets to simulate packet sniffing.

void PacketSniff (Ptr<const Packet> packet)

{

NS_LOG_UNCOND (“Sniffed packet with size ” << packet->GetSize ());

}

// In main function

devices.Get (0)->TraceConnectWithoutContext (“PhyRxDrop”, MakeCallback (&PacketSniff));

1. Advanced Scanning:

During the scan, sent the packet types by modifying and to implement more sophisticated scanning techniques, like SYN scanning or FIN scanning.

From the following notes, we are emphasis on how to improve the network performance and how to create a simulation script by using penetration testing that were implemented using ns3 tool. We will plan to provide the more information about the network Penetration Testing.

Our team of experts offers Implementation Network Penetration testing using ns3tool, ensuring you receive outstanding project execution ideas and thorough comparison analysis. We provide top-notch simulation support, including basic network scheduling, traffic generation, and the simulation of penetration testing scenarios such as port packet sniffing, denial of service (DoS) attacks, and various scanning techniques tailored to your research work.