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How to Implement Endpoint Security in OMNeT++

To implement the endpoint security in OMNeT++ has encompasses generating a simulation situation where the endpoints like PCs, laptops, smartphones, and servers are saved against numerous security threats like network attacks, unauthorized access, and malware. Make sure you drop all your project details to us we help you with best research support.  The following is a step-by-step approach on how to execute endpoint security in OMNeT++ with examples.

Step-by-Step Implementations:

  1. Define the Network Topology

Initially we describe a network topology that contains several endpoints like a laptop, a smartphone, and a server, a router, and a central security server. This setup permits us to mimic interactions among endpoints and the network, and execute security calculates at each endpoint.

network EndpointSecurityNetwork

{

submodules:

laptop: StandardHost {

@display(“p=100,100”);

}

smartphone: StandardHost {

@display(“p=100,200”);

}

server: StandardHost {

@display(“p=300,150”);

}

router: Router {

@display(“p=300,250”);

}

securityServer: StandardHost {

@display(“p=500,150”);

}

firewall: FirewallModule {

@display(“p=200,250”);

}

ids: IDSModule {

@display(“p=400,250”);

}

edr: EDRModule {

@display(“p=500,250”);

}

connections:

laptop.ethg++ <–> Eth100M <–> router.ethg++;

smartphone.ethg++ <–> Eth100M <–> router.ethg++;

server.ethg++ <–> Eth100M <–> router.ethg++;

router.ethg++ <–> Eth100M <–> firewall.in++;

firewall.out++ <–> ids.in++;

ids.out++ <–> edr.in++;

edr.out++ <–> securityServer.ethg++;

}

  1. Implement a Firewall Module

A firewall is necessary for filtering traffic and blocking unofficial access to the endpoints and the network.

Firewall Module

// FirewallModule.cc

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

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

#include “inet/networklayer/ipv4/Ipv4Header_m.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, “out”);

} else {

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

delete packet;

}

}

}

bool FirewallModule::isAllowed(Packet *packet)

{

const auto& networkHeader = packet->peekAtFront<Ipv4Header>();

std::string source = networkHeader->getSrcAddress().str();

std::string destination = networkHeader->getDestAddress().str();

// Example: Block traffic from specific IP addresses or to specific ports

if (source == “192.168.1.100” || destination == “192.168.1.200”) {

return false; // Block traffic

}

return true; // Allow all other traffic

}

  1. Implement an Intrusion Detection System (IDS)

For suspicious activities, like unauthorized access attempts or potential attacks on the endpoints an IDS observes network traffic.

IDS Module

// IDSModule.cc

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

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

#include “inet/networklayer/ipv4/Ipv4Header_m.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);

void logSecurityEvent(const std::string &event);

};

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(msg, “out”);

}

}

void IDSModule::detectIntrusion(Packet *packet)

{

const auto& networkHeader = packet->peekAtFront<Ipv4Header>();

std::string source = networkHeader->getSrcAddress().str();

std::string destination = networkHeader->getDestAddress().str();

// Example: Detect unauthorized access attempts

if (source == “10.0.0.100” && destination == “192.168.1.200”) {

logSecurityEvent(“Unauthorized access attempt detected from ” + source + ” to ” + destination);

}

// Example: Detect potential DDoS attack by monitoring high traffic volume

if (packet->getByteLength() > 1000) { // Threshold for suspicious packet size

logSecurityEvent(“Potential DDoS attack detected from ” + source);

}

}

void IDSModule::logSecurityEvent(const std::string &event)

{

EV << “IDS Event: ” << event << endl;

// Additional logging to files or alerts can be implemented here

}

  1. Implement Endpoint Detection and Response (EDR)

To observe endpoints for suspicious activities, respond to security incidents, and detect potential threats, by using Endpoint Detection and Response (EDR) systems.

EDR Module

// EDRModule.cc

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

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

#include <string>

using namespace omnetpp;

using namespace inet;

class EDRModule : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

void detectEndpointThreat(Packet *packet);

bool respondToThreat(Packet *packet);

};

Define_Module(EDRModule);

void EDRModule::initialize()

{

EV << “Endpoint Detection and Response (EDR) Module Initialized” << endl;

}

void EDRModule::handleMessage(cMessage *msg)

{

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

detectEndpointThreat(packet);

if (respondToThreat(packet)) {

send(packet, “out”);

} else {

EV << “Packet quarantined by EDR due to detected threat.” << endl;

delete packet;

}

}

}

void EDRModule::detectEndpointThreat(Packet *packet)

{

// Example: Simulate detecting a threat in the packet

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

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

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

EV << “Threat detected in packet!” << endl;

// Flag the packet for response action

} else {

EV << “No threat detected in packet.” << endl;

}

}

bool EDRModule::respondToThreat(Packet *packet)

{

// Example: Respond to the detected threat (e.g., quarantine the packet)

const auto& networkHeader = packet->peekAtFront<Ipv4Header>();

std::string source = networkHeader->getSrcAddress().str();

// Example policy: Quarantine traffic from a specific source

if (source == “10.0.0.2”) {

return false; // Quarantine packet

}

return true; // Allow other traffic

}

  1. Integrate the Security Modules

Participate the FirewallModule, IDSModule, and EDRModule into the network to keep the endpoints and the network infrastructure.

network EndpointSecurityNetwork

{

submodules:

laptop: StandardHost {

@display(“p=100,100”);

}

smartphone: StandardHost {

@display(“p=100,200”);

}

server: StandardHost {

@display(“p=300,150”);

}

router: Router {

@display(“p=300,250”);

}

securityServer: StandardHost {

@display(“p=500,150”);

}

firewall: FirewallModule {

@display(“p=200,250”);

}

ids: IDSModule {

@display(“p=400,250”);

}

edr: EDRModule {

@display(“p=500,250”);

}

connections:

laptop.ethg++ <–> Eth100M <–> router.ethg++;

smartphone.ethg++ <–> Eth100M <–> router.ethg++;

server.ethg++ <–> Eth100M <–> router.ethg++;

router.ethg++ <–> Eth100M <–> firewall.in++;

firewall.out++ <–> ids.in++;

ids.out++ <–> edr.in++;

edr.out++ <–> securityServer.ethg++;

}

  1. Simulate Endpoint Security Threats

Mimic several endpoint security threats, like unauthorized access, malware, and DDoS attacks, to test the robustness of the security mechanisms.

Threat Simulation Module

// ThreatSimulationModule.cc

#include <omnetpp.h>

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

using namespace omnetpp;

using namespace inet;

class ThreatSimulationModule : public TcpAppBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void simulateMalware();

void simulateUnauthorizedAccess();

void simulateDDoSAttack();

};

Define_Module(ThreatSimulationModule);

void ThreatSimulationModule::initialize(int stage)

{

TcpAppBase::initialize(stage);

if (stage == inet::INITSTAGE_APPLICATION_LAYER) {

scheduleAt(simTime() + 3, new cMessage(“simulateMalware”));

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

scheduleAt(simTime() + 7, new cMessage(“simulateDDoSAttack”));

}

}

void ThreatSimulationModule::handleMessageWhenUp(cMessage *msg)

{

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

simulateMalware();

delete msg;

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

simulateUnauthorizedAccess();

delete msg;

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

simulateDDoSAttack();

delete msg;

} else {

TcpAppBase::handleMessageWhenUp(msg);

}

}

void ThreatSimulationModule::simulateMalware()

{

EV << “Simulating malware infection on endpoint…” << endl;

sendRequest(“GET /malware HTTP/1.1\r\nHost: laptop\r\n\r\n”);

}

void ThreatSimulationModule::simulateUnauthorizedAccess()

{

EV << “Simulating unauthorized access attempt on endpoint…” << endl;

sendRequest(“GET /secureData HTTP/1.1\r\nHost: server\r\n\r\n”);

}

void ThreatSimulationModule::simulateDDoSAttack()

{

EV << “Simulating DDoS attack on endpoint…” << endl;

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

sendRequest(“GET / HTTP/1.1\r\nHost: server\r\n\r\n”);

}

}

  1. Run the Simulation

Compile and run the simulation in OMNeT++. For suspicious activities, the FirewallModule will filter traffic, the IDSModule will observe, and the EDRModule will identify and respond to threats on the endpoints.

  1. Analyse the Results

Verify the OMNeT++ simulation log to know how the security modules respond to the mimicked endpoint security threats. Examine the logs to determine whether the firewall efficiently blocked unauthorized traffic, whether the IDS detected intrusions, and whether the EDR module detected and responded to threats.

  1. Extend the Endpoint Security Features

We can extend this basic setup by:

  • Implementing more sophisticated IDS rules: Identify more difficult attacks like zero-day exploits or lateral movement in the network.
  • Using advanced encryption techniques: Secure the communication among endpoints and the network setup.
  • Simulating insider threats: Check the system against attacks originating from in the network.
  • Integrating with security information and event management (SIEM) systems: Mimic the combination of endpoint security with SIEM for centralized monitoring and incident response.

Over this paper, we had expressed about the process on how to execute the Endpoint security using in OMNeT++. More informations will be offered depends on your needs.

Related Topics

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  • Network Security Research Topics

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