How to Implement Wireless Security in OMNeT++

To implement wireless security in OMNeT++ has encompasses to emulate the wireless networks, like Wi-Fi, cellular, or ad-hoc networks, though integrating the security mechanisms to secure against numerous threats. Wireless networks are certain to susceptible to attacks like eavesdropping, unauthorized access, and denial-of-service (DoS) attacks, making security a crucial aspect of their model and operation. The below are the procedures to implement wireless security in OMNeT++.

Step-by-Step Implementation:

Understand the Components

Before execution, it is significant to recognize the key components have includes in wireless security:

Wireless Nodes: These could be mobile devices, laptops, IoT devices, or any endpoint that interconnects to the wireless network.
Access Points (APs): Devices that offers wireless connectivity to the network and handle the interaction among wireless nodes and the wired network.
Security Mechanisms: These contain an encryption (WPA2, WPA3), authentication, access control, firewalls, and intrusion detection systems (IDS) to secure the wireless network.
Threat Actors: To emulate the possible threats like attackers attempting to eavesdrop on communications, achieve DoS attacks, or gain unauthorized access to the network.

Define the Wireless Network Topology

Describe a network topology in OMNeT++ that contains the wireless nodes, access points, and a central network that conclude the security components like firewalls, IDS, and secure communication channels.

network WirelessNetwork

{

submodules:

wirelessNode1: WirelessNode {

@display(“p=100,150”);

}

wirelessNode2: WirelessNode {

@display(“p=100,250”);

}

accessPoint: AccessPoint {

@display(“p=300,200”);

}

firewall: FirewallModule {

@display(“p=200,100”);

}

ids: IDSModule {

@display(“p=400,100”);

}

centralNetwork: CentralNetwork {

@display(“p=500,200”);

}

attacker: AttackerNode {

@display(“p=600,250”);

}

connections:

wirelessNode1.wlan++ <–> Adhoc80211Nic <–> accessPoint.wlan++;

wirelessNode2.wlan++ <–> Adhoc80211Nic <–> accessPoint.wlan++;

accessPoint.ethg++ <–> Eth100M <–> firewall.ethg++;

firewall.ethg++ <–> Eth100M <–> ids.ethg++;

ids.ethg++ <–> Eth100M <–> centralNetwork.ethg++;

attacker.wlan++ <–> Adhoc80211Nic <–> accessPoint.wlan++;

}

Implement the Wireless Node

The Wireless Node denotes the devices that linked to the wireless network and these devices should have security mechanisms such as encryption and authentication to make sure secure communication with the network.

Wireless Node Implementation

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

#include “inet/applications/udpapp/UDPBasicApp.h”

using namespace omnetpp;

using namespace inet;

class WirelessNode : public cSimpleModule

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessage(cMessage *msg) override;

void connectToAP();

};

Define_Module(WirelessNode);

void WirelessNode::initialize(int stage)

{

cSimpleModule::initialize(stage);

if (stage == inet::INITSTAGE_APPLICATION_LAYER) {

EV << “Wireless Node Initialized” << endl;

scheduleAt(simTime() + uniform(1, 3), new cMessage(“connectToAP”));

}

void WirelessNode::handleMessage(cMessage *msg)

{

if (strcmp(msg->getName(), “connectToAP”) == 0) {

connectToAP();

}

delete msg;

}

void WirelessNode::connectToAP()

{

// Simulate connection to the access point

Packet *packet = new Packet(“ConnectionRequestPacket”);

packet->insertAtBack(makeShared<Chunk>(std::vector<int>{1, 2, 3})); // Example data

send(packet, “wlanOut”);

// Schedule the next action

scheduleAt(simTime() + uniform(1, 3), new cMessage(“connectToAP”));

}

Implement the Access Point (AP)

The Access Point is accountable for handling the interaction among the wireless nodes and the wired network. It should execute the security evaluation to authenticate wireless nodes and encrypt traffic.

Access Point Implementation

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

#include “inet/common/packet/Packet.h”

#include <openssl/evp.h>

using namespace omnetpp;

using namespace inet;

class AccessPoint : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

void authenticateNode(Packet *packet);

std::string encryptData(const std::string &data);

};

Define_Module(AccessPoint);

void AccessPoint::initialize()

{

EV << “Access Point Initialized” << endl;

}

void AccessPoint::handleMessage(cMessage *msg)

{

if (Packet *packet = dynamic_cast<Packet *>(msg)) {

authenticateNode(packet);

}

delete msg;

}

void AccessPoint::authenticateNode(Packet *packet)

{

const auto &payload = packet->peekData();

std::string data = payload->str();

// Encrypt the data before further processing

std::string encryptedData = encryptData(data);

EV << “Authenticating wireless node and encrypting data: ” << encryptedData << endl;

// Forward processed data to the central network

Packet *processedPacket = new Packet(“AuthenticatedDataPacket”);

processedPacket->insertAtBack(makeShared<Chunk>(encryptedData));

send(processedPacket, “ethgOut”);

}

std::string AccessPoint::encryptData(const std::string &data)

{

// Simplified encryption using OpenSSL

unsigned char key[16] = “apkey12345678”;

unsigned char iv[16] = “initialvector12”;

EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();

EVP_EncryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv);

unsigned char encrypted[1024];

int len;

EVP_EncryptUpdate(ctx, encrypted, &len, (unsigned char*)data.c_str(), data.length());

int ciphertext_len = len;

EVP_EncryptFinal_ex(ctx, encrypted + len, &len);

ciphertext_len += len;

EVP_CIPHER_CTX_free(ctx);

return std::string((char*)encrypted, ciphertext_len);

}

Implement the Central Network

The Central Network signifies the core part of the network that manages data routing, authentication, and service delivery. Security measures have contains to make sure that only authenticated and authorized devices can access the network.

Central Network Implementation

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

#include “inet/common/packet/Packet.h”

using namespace omnetpp;

using namespace inet;

class CentralNetwork : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

void manageData(Packet *packet);

void authenticateDevice(const std::string &data);

};

Define_Module(CentralNetwork);

void CentralNetwork::initialize()

{

EV << “Central Network Initialized” << endl;

}

void CentralNetwork::handleMessage(cMessage *msg)

{

if (Packet *packet = dynamic_cast<Packet *>(msg)) {

manageData(packet);

}

delete msg;

}

void CentralNetwork::manageData(Packet *packet)

{

const auto &payload = packet->peekData();

std::string data = payload->str();

// Authenticate the device before further processing

authenticateDevice(data);

EV << “Managing data in the central network: ” << data << endl;

// Simulate data management (e.g., routing, storage)

}

void CentralNetwork::authenticateDevice(const std::string &data)

{

// Simulate device authentication

EV << “Authenticating device: ” << data << endl;

// Implement authentication logic here

}

Implement the Firewall Module

The Firewall Module filters traffic to and from the central network and access points, make sure only liable traffic travels via and blocking any distrustful activity.

Firewall Module Implementation

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

#include “inet/common/packet/Packet.h”

using namespace omnetpp;

using namespace inet;

class FirewallModule : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

bool isAllowed(Packet *packet);

};

Define_Module(FirewallModule);

void FirewallModule::initialize()

{

EV << “Firewall Module Initialized” << endl;

}

void FirewallModule::handleMessage(cMessage *msg)

{

if (Packet *packet = dynamic_cast<Packet *>(msg)) {

if (isAllowed(packet)) {

send(packet, “ethgOut”);

} else {

EV << “Packet dropped by firewall.” << endl;

delete packet;

}

bool FirewallModule::isAllowed(Packet *packet)

{

// Implement filtering logic (e.g., block specific IPs or patterns)

const auto &payload = packet->peekData();

std::string data = payload->str();

return data.find(“malicious”) == std::string::npos; // Example rule

}

Implement the IDS Module

The IDS Module tracks the network traffic to identify any potential intrusions or attacks like data breaches, DoS attacks, or unauthorized access.

IDS Module Implementation

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

#include “inet/common/packet/Packet.h”

using namespace omnetpp;

using namespace inet;

class IDSModule : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

void detectIntrusion(Packet *packet);

};

Define_Module(IDSModule);

void IDSModule::initialize()

{

EV << “IDS Module Initialized” << endl;

}

void IDSModule::handleMessage(cMessage *msg)

{

if (Packet *packet = dynamic_cast<Packet *>(msg)) {

detectIntrusion(packet);

send(packet, “ethgOut”);

}

delete msg;

}

void IDSModule::detectIntrusion(Packet *packet)

{

const auto &payload = packet->peekData();

std::string data = payload->str();

// Implement simple intrusion detection logic

if (data.find(“attack”) != std::string::npos) {

EV << “Intrusion detected! Taking action…” << endl;

// Implement any action needed (e.g., alerting, blocking)

}

Implement the Attacker Node

The Attacker Node emulates adversarial behaviour, like attempting to interrupt interaction, launch a DoS attack, or exploit vulnerabilities in the wireless network.

Attacker Node Implementation

#include <omnetpp.h>

#include “inet/applications/tcpapp/TcpAppBase.h”

using namespace omnetpp;

using namespace inet;

class AttackerNode : public TcpAppBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void launchDoSAttack();

void launchInterception();

};

Define_Module(AttackerNode);

void AttackerNode::initialize(int stage)

{

TcpAppBase::initialize(stage);

if (stage == inet::INITSTAGE_APPLICATION_LAYER) {

scheduleAt(simTime() + 2, new cMessage(“launchDoSAttack”));

scheduleAt(simTime() + 5, new cMessage(“launchInterception”));

}

void AttackerNode::handleMessageWhenUp(cMessage *msg)

{

if (strcmp(msg->getName(), “launchDoSAttack”) == 0) {

launchDoSAttack();

delete msg;

} else if (strcmp(msg->getName(), “launchInterception”) == 0) {

launchInterception();

delete msg;

} else {

TcpAppBase::handleMessageWhenUp(msg);

}

void AttackerNode::launchDoSAttack()

{

EV << “Launching DoS attack on Access Point…” << endl;

for (int i = 0; i < 100; i++) {

Packet *packet = new Packet(“DoSPacket”);

sendToUDP(packet, localPort, Ipv4AddressResolver().resolve(“accessPoint”), 5000);

}

void AttackerNode::launchInterception()

{

EV << “Launching interception attempt…” << endl;

// Send a packet to intercept communication between Wireless Node and Access Point

Packet *packet = new Packet(“InterceptionPacket”);

packet->insertAtBack(makeShared<Chunk>(std::vector<int>{999, 999, 999})); // Example malicious data

sendToUDP(packet, localPort, Ipv4AddressResolver().resolve(“accessPoint”), 5000);

}

Integrate All Components into the Wireless Network Security Simulation

Incorporate the wireless nodes, access points, central network, firewall, IDS, and attacker node into the network to generate the complete wireless network security simulation.

network WirelessNetwork

{

submodules:

wirelessNode1: WirelessNode {

@display(“p=100,150”);

}

wirelessNode2: WirelessNode {

@display(“p=100,250”);

}

accessPoint: AccessPoint {

@display(“p=300,200”);

}

firewall: FirewallModule {

@display(“p=200,100”);

}

ids: IDSModule {

@display(“p=400,100”);

}

centralNetwork: CentralNetwork {

@display(“p=500,200”);

}

attacker: AttackerNode {

@display(“p=600,250”);

}

connections:

wirelessNode1.wlan++ <–> Adhoc80211Nic <–> accessPoint.wlan++;

wirelessNode2.wlan++ <–> Adhoc80211Nic <–> accessPoint.wlan++;

accessPoint.ethg++ <–> Eth100M <–> firewall.ethg++;

firewall.ethg++ <–> Eth100M <–> ids.ethg++;

ids.ethg++ <–> Eth100M <–> centralNetwork.ethg++;

attacker.wlan++ <–> Adhoc80211Nic <–> accessPoint.wlan++;

}

Run the Simulation

Compile and run the simulation in OMNeT++. The network should securely manage the wireless node connections, data routing, and communication while classifying and preventing any adversarial activities based to the implemented functionality.

Analyses the Results

Check the OMNeT++ simulation log to monitor how the network manages the wireless node connections, data routing, and detected intrusions. Verify that:

Wireless nodes are authenticated and securely connected to the network.
Data is securely transmitted via the access point and central network.
Intrusions and attacks are identified and prevented.

Extend the Wireless Network Security Simulation

We need to expand this setup by:

Implementing more advanced security mechanisms: To Contain the approaches such as WPA3, secure handovers, and advanced encryption methods.
Simulating additional threats: Include advanced persistent threats (APTs), man-in-the-middle attacks, or jamming attacks.
Adding monitoring and logging: Execute logging mechanisms to observe the network activity, security events, and performance metrics.
Integrating with IoT and edge computing: To mimic the wireless network security in environments with IoT devices and edge computing nodes.

Overall, here we can describe the wireless security that had implemented in OMNeT++ simulation. We provide further information related to wireless security how it adjusts with diverse environments.

You must send us the project details in order to receive Implementation guidance on Wireless Security in the OMNeT++ tool. We will provide you with the best results. By exchanging best practices, we combat attacks such as denial-of-service (DoS) attacks, eavesdropping, and unauthorized access.