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How to Implement Cybersecurity Auditing in OMNeT++

To implement the cybersecurity auditing in OMNeT++, we need to generate a system which observes network activities, identify potential security breaches and logs related event for analysis. Below is an example of how to set up a basic cybersecurity auditing system in OMNeT++.

Step-by-Step Implementation:

  1. Define the Network Topology

Use NED language to generate a basic network topology. Let’s assume a network with one client, one server, and a router connecting them.

network CybersecurityAuditNetwork

{

submodules:

client: StandardHost {

@display(“p=100,150”);

}

router: Router {

@display(“p=300,150”);

}

server: StandardHost {

@display(“p=500,150”);

}

connections:

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

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

}

  1. Create an Auditing Module

Monitor network traffic, identify security events and stores it by creating a module which will be connected to the router to observe all traffic moves over it.

// CyberAuditModule.cc

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

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

#include “inet/networklayer/ipv4/Ipv4Header_m.h”

#include “inet/linklayer/common/MacAddress.h”

using namespace omnetpp;

using namespace inet;

class CyberAuditModule : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

void auditPacket(Packet *packet);

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

};

Define_Module(CyberAuditModule);

void CyberAuditModule::initialize()

{

// Initialize the auditing module

}

void CyberAuditModule::handleMessage(cMessage *msg)

{

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

auditPacket(packet);

}

send(msg, “out”);

}

void CyberAuditModule::auditPacket(Packet *packet)

{

// Extract information from the packet

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

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

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

int protocol = networkHeader->getProtocolId();

// Example: Detect suspicious activity (e.g., access to a specific port)

if (protocol == IP_PROT_TCP) {

auto transportHeader = packet->peekDataAt<TcpHeader>(networkHeader->getHeaderLength());

int destPort = transportHeader->getDestPort();

if (destPort == 23) { // Telnet (often a security risk)

logEvent(“Suspicious activity: Access to Telnet port from ” + source + ” to ” + destination);

}

}

// Example: Log all traffic for auditing purposes

logEvent(“Packet from ” + source + ” to ” + destination + ” using protocol ” + std::to_string(protocol));

}

void CyberAuditModule::logEvent(const std::string &event)

{

EV << “CyberAudit: ” << event << endl;

// You could also write this to a file or a database for persistent logging

}

  1. Integrate the Auditing Module into the Network

Add the CyberAuditModule to the router in the network topology to observe all traffic passing through it.

// CybersecurityAuditNetwork.ned

network CybersecurityAuditNetwork

{

submodules:

client: StandardHost {

@display(“p=100,150”);

}

router: Router {

@display(“p=300,150”);

}

audit: CyberAuditModule {

@display(“p=300,100”);

}

server: StandardHost {

@display(“p=500,150”);

}

connections:

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

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

audit.in++ <–> router.ethg++;

audit.out++ <–> router.ethg++;

}

  1. Simulate a Security Event

Examine the cybersecurity auditing by simulating a situation in which the client attempts to access a week service (example: Telnet on port 23) on the server.

// ClientApp.cc (Example application to simulate an attack)

#include <omnetpp.h>

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

using namespace omnetpp;

using namespace inet;

class ClientApp : public TcpAppBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleTimer(cMessage *msg) override;

};

Define_Module(ClientApp);

void ClientApp::initialize(int stage)

{

TcpAppBase::initialize(stage);

if (stage == inet::INITSTAGE_APPLICATION_LAYER) {

scheduleAt(simTime() + 1, new cMessage(“connect”));

}

}

void ClientApp::handleTimer(cMessage *msg)

{

TcpAppBase::connect();

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

}

  1. Run the Simulation

Compile and run the simulation in OMNeT++. The CyberAuditModule will observe the traffic and log events when certain conditions are met like when the client attempts to access the Telnet port on the server.

  1. Analyze the Results

Verify the OMNeT++ simulation log to see the events logged by the CyberAuditModule. This will contain normal traffic logging as well as any suspicious activities identified.

  1. Extend the Auditing Module

We can expand the auditing module by:

  • Adding more sophisticated detection rules: For instance, identifying repeated login tries or unusually big data transfers.
  • Incorporating with external logging systems: like sending logs to a SIEM (Security Information and Event Management) system.
  • Triggering automated responses: like blocking traffic or notifying administrators if a threat is detected.

At the end of this procedure, you can completely understand the basic simulation process and the entire implementation of Cybersecurity Auditing in OMNeT++ and how to evaluate and extend the functionalities to this structure. We offer complete information on how to implement and execute the cybersecurity auditing in the OMNeT++ through this approach. Drop all your project detail to omnet-manual.com for good guidance.

Related Topics

  • Network Intrusion Detection Projects
  • Computer Science Phd Topics
  • Iot Thesis Ideas
  • Cyber Security Thesis Topics
  • Network Security Research Topics

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