To implement the cybersecurity in ns-3 consists to simulating the network security protocols and assaults, and evaluating their effect on network performance. Here is a complete procedure to implement the cybersecurity features in ns-3:
Step-by-Step Guide to Implement Cybersecurity in ns-3
- Install ns3
To make certain the ns-3 is installed on the system. If not downloaded and installed then installed from its official website.
- Define the Network Topology
Here is the network topology that contains:
- Normal nodes (e.g., legitimate users)
- Attacker nodes
- Server nodes
- Implement Network Nodes
Create network nodes using NodeContainer.
NodeContainer normalNodes, attackerNodes, serverNodes;
normalNodes.Create(numNormalNodes);
attackerNodes.Create(numAttackerNodes);
serverNodes.Create(numServerNodes);
- Set Up Network Devices
Install network devices on the nodes using appropriate network interfaces. instances, use WiFi for wireless communication.
WifiHelper wifi;
wifi.SetStandard(WIFI_PHY_STANDARD_80211n_5GHZ);
WifiMacHelper mac;
mac.SetType(“ns3::AdhocWifiMac”);
YansWifiPhyHelper phy = YansWifiPhyHelper::Default();
YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
phy.SetChannel(channel.Create());
NetDeviceContainer normalDevices = wifi.Install(phy, mac, normalNodes);
NetDeviceContainer attackerDevices = wifi.Install(phy, mac, attackerNodes);
NetDeviceContainer serverDevices = wifi.Install(phy, mac, serverNodes);
- Configure Mobility Model
Set up the mobility model for the nodes to simulate realistic movement.
MobilityHelper mobility;
mobility.SetMobilityModel(“ns3::ConstantPositionMobilityModel”);
mobility.Install(normalNodes);
mobility.Install(attackerNodes);
mobility.Install(serverNodes);
- Implement Security Protocols
Apply security protocols to protect the network instances, using IPsec to protected the communication among nodes.
- IPsec Implementation (Example)
You can simulate IPsec by encrypting and authenticating packets at the network layer.
class IPsecApplication : public Application {
public:
void StartApplication() override {
sendSocket = Socket::CreateSocket(GetNode(), UdpSocketFactory::GetTypeId());
sendSocket->Connect(InetSocketAddress(destAddress, destPort));
recvSocket = Socket::CreateSocket(GetNode(), UdpSocketFactory::GetTypeId());
recvSocket->Bind(InetSocketAddress(Ipv4Address::GetAny(), localPort));
recvSocket->SetRecvCallback(MakeCallback(&IPsecApplication::ReceivePacket, this));
// Schedule the first packet send
SendPacket();
}
void SetRemote(Address address, uint16_t port) {
destAddress = address;
destPort = port;
}
void SetLocalPort(uint16_t port) {
localPort = port;
}
void SendPacket() {
std::string message = “Hello, this is an encrypted message”;
std::string encryptedMessage = EncryptMessage(message);
Ptr<Packet> packet = Create<Packet>((uint8_t*) encryptedMessage.c_str(), encryptedMessage.size());
sendSocket->Send(packet);
// Schedule the next packet send
Simulator::Schedule(Seconds(1.0), &IPsecApplication::SendPacket, this);
}
void ReceivePacket(Ptr<Socket> socket) {
Ptr<Packet> packet;
while ((packet = socket->Recv())) {
std::string encryptedMessage = std::string((char*) packet->PeekData(), packet->GetSize());
std::string message = DecryptMessage(encryptedMessage);
std::cout << “Received message: ” << message << std::endl;
}
}
std::string EncryptMessage(const std::string& message) {
// Placeholder encryption logic
return message;
}
std::string DecryptMessage(const std::string& encryptedMessage) {
// Placeholder decryption logic
return encryptedMessage;
}
private:
Ptr<Socket> sendSocket;
Ptr<Socket> recvSocket;
Address destAddress;
uint16_t destPort;
uint16_t localPort;
};
- Implement Attack Models
Simulate different types of attacks. For example, a Denial of Service (DoS) attack can be simulated by sending a large number of packets to overwhelm a server.
- DoS Attack Implementation (Example)
class DoSAttackApplication : public Application {
public:
void StartApplication() override {
sendSocket = Socket::CreateSocket(GetNode(), UdpSocketFactory::GetTypeId());
sendSocket->Connect(InetSocketAddress(destAddress, destPort));
// Schedule the first packet send
SendPacket();
}
void SetRemote(Address address, uint16_t port) {
destAddress = address;
destPort = port;
}
void SendPacket() {
std::string message = “This is a DoS attack packet”;
Ptr<Packet> packet = Create<Packet>((uint8_t*) message.c_str(), message.size());
sendSocket->Send(packet);
// Schedule the next packet send
Simulator::Schedule(MilliSeconds(10), &DoSAttackApplication::SendPacket, this);
}
private:
Ptr<Socket> sendSocket;
Address destAddress;
uint16_t destPort;
};
- Set Up Applications
Install the applications on the nodes.
ApplicationContainer normalApps, attackerApps, serverApps;
for (uint32_t i = 0; i < normalNodes.GetN(); ++i) {
Ptr<IPsecApplication> app = CreateObject<IPsecApplication>();
app->SetRemote(serverNodes.Get(0)->GetObject<Ipv4>()->GetAddress(1, 0).GetLocal(), 9);
app->SetLocalPort(10);
normalNodes.Get(i)->AddApplication(app);
app->SetStartTime(Seconds(1.0));
app->SetStopTime(Seconds(20.0));
normalApps.Add(app);
}
for (uint32_t i = 0; i < attackerNodes.GetN(); ++i) {
Ptr<DoSAttackApplication> app = CreateObject<DoSAttackApplication>();
app->SetRemote(serverNodes.Get(0)->GetObject<Ipv4>()->GetAddress(1, 0).GetLocal(), 9);
attackerNodes.Get(i)->AddApplication(app);
app->SetStartTime(Seconds(5.0));
app->SetStopTime(Seconds(20.0));
attackerApps.Add(app);
}
PacketSinkHelper sink(“ns3::UdpSocketFactory”, InetSocketAddress(Ipv4Address::GetAny(), 9));
serverApps.Add(sink.Install(serverNodes));
serverApps.Start(Seconds(1.0));
serverApps.Stop(Seconds(20.0));
- Set Up Routing Protocols
Configure routing protocols for the network.
AodvHelper aodv;
InternetStackHelper internet;
internet.SetRoutingHelper(aodv);
internet.Install(normalNodes);
internet.Install(attackerNodes);
internet.Install(serverNodes);
- Assign IP Addresses
Assign IP addresses to the network devices.
Ipv4AddressHelper address;
address.SetBase(“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer normalInterfaces = address.Assign(normalDevices);
Ipv4InterfaceContainer attackerInterfaces = address.Assign(attackerDevices);
Ipv4InterfaceContainer serverInterfaces = address.Assign(serverDevices);
- Run the Simulation
Configure the simulation runtime and execute it.
Simulator::Stop(Seconds(20.0));
Simulator::Run();
Simulator::Destroy();
Example of a Simple Cybersecurity Network Script
The given below is the sample scrip to complete the cybersecurity simulation in ns-3 environment:
#include “ns3/core-module.h”
#include “ns3/network-module.h”
#include “ns3/internet-module.h”
#include “ns3/wifi-module.h”
#include “ns3/mobility-module.h”
#include “ns3/applications-module.h”
#include “ns3/aodv-module.h”
using namespace ns3;
class IPsecApplication : public Application {
public:
void StartApplication() override {
sendSocket = Socket::CreateSocket(GetNode(), UdpSocketFactory::GetTypeId());
sendSocket->Connect(InetSocketAddress(destAddress, destPort));
recvSocket = Socket::CreateSocket(GetNode(), UdpSocketFactory::GetTypeId());
recvSocket->Bind(InetSocketAddress(Ipv4Address::GetAny(), localPort));
recvSocket->SetRecvCallback(MakeCallback(&IPsecApplication::ReceivePacket, this));
// Schedule the first packet send
SendPacket();
}
void SetRemote(Address address, uint16_t port) {
destAddress = address;
destPort = port;
}
void SetLocalPort(uint16_t port) {
localPort = port;
}
void SendPacket() {
std::string message = “Hello, this is an encrypted message”;
std::string encryptedMessage = EncryptMessage(message);
Ptr<Packet> packet = Create<Packet>((uint8_t*) encryptedMessage.c_str(), encryptedMessage.size());
sendSocket->Send(packet);
// Schedule the next packet send
Simulator::Schedule(Seconds(1.0), &IPsecApplication::SendPacket, this);
}
void ReceivePacket(Ptr<Socket> socket) {
Ptr<Packet> packet;
while ((packet = socket->Recv())) {
std::string encryptedMessage = std::string((char*) packet->PeekData(), packet->GetSize());
std::string message = DecryptMessage(encryptedMessage);
std::cout << “Received message: ” << message << std::endl;
}
}
std::string EncryptMessage(const std::string& message) {
// Placeholder encryption logic
return message;
}
std::string DecryptMessage(const std::string& encryptedMessage) {
// Placeholder decryption logic
return encryptedMessage;
}
private:
Ptr<Socket> sendSocket;
Ptr<Socket> recvSocket;
Address destAddress;
uint16_t destPort;
uint16_t localPort;
};
class DoSAttackApplication : public Application {
public:
void StartApplication() override {
sendSocket = Socket::CreateSocket(GetNode(), UdpSocketFactory::GetTypeId());
sendSocket->Connect(InetSocketAddress(destAddress, destPort));
// Schedule the first packet send
SendPacket();
}
void SetRemote(Address address, uint16_t port) {
destAddress = address;
destPort = port;
}
void SendPacket() {
std::string message = “This is a DoS attack packet”;
Ptr<Packet> packet = Create<Packet>((uint8_t*) message.c_str(), message.size());
sendSocket->Send(packet);
// Schedule the next packet send
Simulator::Schedule(MilliSeconds(10), &DoSAttackApplication::SendPacket, this);
}
private:
Ptr<Socket> sendSocket;
Address destAddress;
uint16_t destPort;
};
int main(int argc, char *argv[]) {
NodeContainer normalNodes, attackerNodes, serverNodes;
normalNodes.Create(3);
attackerNodes.Create(1);
serverNodes.Create(1);
// WiFi setup
WifiHelper wifi;
wifi.SetStandard(WIFI_PHY_STANDARD_80211n_5GHZ);
WifiMacHelper mac;
mac.SetType(“ns3::AdhocWifiMac”);
YansWifiPhyHelper phy = YansWifiPhyHelper::Default();
YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
phy.SetChannel(channel.Create());
NetDeviceContainer normalDevices = wifi.Install(phy, mac, normalNodes);
NetDeviceContainer attackerDevices = wifi.Install(phy, mac, attackerNodes);
NetDeviceContainer serverDevices = wifi.Install(phy, mac, serverNodes);
// Mobility setup
MobilityHelper mobility;
mobility.SetMobilityModel(“ns3::ConstantPositionMobilityModel”);
mobility.Install(normalNodes);
mobility.Install(attackerNodes);
mobility.Install(serverNodes);
// Internet stack and routing
AodvHelper aodv;
InternetStackHelper internet;
internet.SetRoutingHelper(aodv);
internet.Install(normalNodes);
internet.Install(attackerNodes);
internet.Install(serverNodes);
Ipv4AddressHelper address;
address.SetBase(“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer normalInterfaces = address.Assign(normalDevices);
Ipv4InterfaceContainer attackerInterfaces = address.Assign(attackerDevices);
Ipv4InterfaceContainer serverInterfaces = address.Assign(serverDevices);
// Install applications
ApplicationContainer normalApps, attackerApps, serverApps;
for (uint32_t i = 0; i < normalNodes.GetN(); ++i) {
Ptr<IPsecApplication> app = CreateObject<IPsecApplication>();
app->SetRemote(serverNodes.Get(0)->GetObject<Ipv4>()->GetAddress(1, 0).GetLocal(), 9);
app->SetLocalPort(10);
normalNodes.Get(i)->AddApplication(app);
app->SetStartTime(Seconds(1.0));
app->SetStopTime(Seconds(20.0));
normalApps.Add(app);
}
for (uint32_t i = 0; i < attackerNodes.GetN(); ++i) {
Ptr<DoSAttackApplication> app = CreateObject<DoSAttackApplication>();
app->SetRemote(serverNodes.Get(0)->GetObject<Ipv4>()->GetAddress(1, 0).GetLocal(), 9);
attackerNodes.Get(i)->AddApplication(app);
app->SetStartTime(Seconds(5.0));
app->SetStopTime(Seconds(20.0));
attackerApps.Add(app);
}
PacketSinkHelper sink(“ns3::UdpSocketFactory”, InetSocketAddress(Ipv4Address::GetAny(), 9));
serverApps.Add(sink.Install(serverNodes));
serverApps.Start(Seconds(1.0));
serverApps.Stop(Seconds(20.0));
Simulator::Stop(Seconds(20.0));
Simulator::Run();
Simulator::Destroy();
return 0;
}
Overall, here we discussed the basic knowledge about how to implement the Cybersecurity in ns-3 environment and additionally we provide all kinds of Cybersecurity networks that perform in different environments. Programming help for all cybersecurity in ns-3 are worked by us.